1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/ip.h> 19 #include <linux/tcp.h> 20 #include <linux/mii.h> 21 #include <linux/kthread.h> 22 #include <linux/slab.h> 23 #include <linux/if_vlan.h> 24 #include <linux/netdevice.h> 25 #include <linux/netdev_features.h> 26 #include <linux/skbuff.h> 27 28 #include <net/iucv/af_iucv.h> 29 #include <net/dsfield.h> 30 31 #include <asm/ebcdic.h> 32 #include <asm/chpid.h> 33 #include <asm/io.h> 34 #include <asm/sysinfo.h> 35 #include <asm/compat.h> 36 #include <asm/diag.h> 37 #include <asm/cio.h> 38 #include <asm/ccwdev.h> 39 40 #include "qeth_core.h" 41 42 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 43 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 44 /* N P A M L V H */ 45 [QETH_DBF_SETUP] = {"qeth_setup", 46 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 47 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 48 &debug_sprintf_view, NULL}, 49 [QETH_DBF_CTRL] = {"qeth_control", 50 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 51 }; 52 EXPORT_SYMBOL_GPL(qeth_dbf); 53 54 struct qeth_card_list_struct qeth_core_card_list; 55 EXPORT_SYMBOL_GPL(qeth_core_card_list); 56 struct kmem_cache *qeth_core_header_cache; 57 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 58 static struct kmem_cache *qeth_qdio_outbuf_cache; 59 60 static struct device *qeth_core_root_dev; 61 static struct lock_class_key qdio_out_skb_queue_key; 62 static struct mutex qeth_mod_mutex; 63 64 static void qeth_send_control_data_cb(struct qeth_channel *, 65 struct qeth_cmd_buffer *); 66 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 67 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 68 static void qeth_free_buffer_pool(struct qeth_card *); 69 static int qeth_qdio_establish(struct qeth_card *); 70 static void qeth_free_qdio_buffers(struct qeth_card *); 71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 72 struct qeth_qdio_out_buffer *buf, 73 enum iucv_tx_notify notification); 74 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 75 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 76 struct qeth_qdio_out_buffer *buf, 77 enum qeth_qdio_buffer_states newbufstate); 78 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 79 80 struct workqueue_struct *qeth_wq; 81 EXPORT_SYMBOL_GPL(qeth_wq); 82 83 int qeth_card_hw_is_reachable(struct qeth_card *card) 84 { 85 return (card->state == CARD_STATE_SOFTSETUP) || 86 (card->state == CARD_STATE_UP); 87 } 88 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 89 90 static void qeth_close_dev_handler(struct work_struct *work) 91 { 92 struct qeth_card *card; 93 94 card = container_of(work, struct qeth_card, close_dev_work); 95 QETH_CARD_TEXT(card, 2, "cldevhdl"); 96 rtnl_lock(); 97 dev_close(card->dev); 98 rtnl_unlock(); 99 ccwgroup_set_offline(card->gdev); 100 } 101 102 void qeth_close_dev(struct qeth_card *card) 103 { 104 QETH_CARD_TEXT(card, 2, "cldevsubm"); 105 queue_work(qeth_wq, &card->close_dev_work); 106 } 107 EXPORT_SYMBOL_GPL(qeth_close_dev); 108 109 static const char *qeth_get_cardname(struct qeth_card *card) 110 { 111 if (card->info.guestlan) { 112 switch (card->info.type) { 113 case QETH_CARD_TYPE_OSD: 114 return " Virtual NIC QDIO"; 115 case QETH_CARD_TYPE_IQD: 116 return " Virtual NIC Hiper"; 117 case QETH_CARD_TYPE_OSM: 118 return " Virtual NIC QDIO - OSM"; 119 case QETH_CARD_TYPE_OSX: 120 return " Virtual NIC QDIO - OSX"; 121 default: 122 return " unknown"; 123 } 124 } else { 125 switch (card->info.type) { 126 case QETH_CARD_TYPE_OSD: 127 return " OSD Express"; 128 case QETH_CARD_TYPE_IQD: 129 return " HiperSockets"; 130 case QETH_CARD_TYPE_OSN: 131 return " OSN QDIO"; 132 case QETH_CARD_TYPE_OSM: 133 return " OSM QDIO"; 134 case QETH_CARD_TYPE_OSX: 135 return " OSX QDIO"; 136 default: 137 return " unknown"; 138 } 139 } 140 return " n/a"; 141 } 142 143 /* max length to be returned: 14 */ 144 const char *qeth_get_cardname_short(struct qeth_card *card) 145 { 146 if (card->info.guestlan) { 147 switch (card->info.type) { 148 case QETH_CARD_TYPE_OSD: 149 return "Virt.NIC QDIO"; 150 case QETH_CARD_TYPE_IQD: 151 return "Virt.NIC Hiper"; 152 case QETH_CARD_TYPE_OSM: 153 return "Virt.NIC OSM"; 154 case QETH_CARD_TYPE_OSX: 155 return "Virt.NIC OSX"; 156 default: 157 return "unknown"; 158 } 159 } else { 160 switch (card->info.type) { 161 case QETH_CARD_TYPE_OSD: 162 switch (card->info.link_type) { 163 case QETH_LINK_TYPE_FAST_ETH: 164 return "OSD_100"; 165 case QETH_LINK_TYPE_HSTR: 166 return "HSTR"; 167 case QETH_LINK_TYPE_GBIT_ETH: 168 return "OSD_1000"; 169 case QETH_LINK_TYPE_10GBIT_ETH: 170 return "OSD_10GIG"; 171 case QETH_LINK_TYPE_LANE_ETH100: 172 return "OSD_FE_LANE"; 173 case QETH_LINK_TYPE_LANE_TR: 174 return "OSD_TR_LANE"; 175 case QETH_LINK_TYPE_LANE_ETH1000: 176 return "OSD_GbE_LANE"; 177 case QETH_LINK_TYPE_LANE: 178 return "OSD_ATM_LANE"; 179 default: 180 return "OSD_Express"; 181 } 182 case QETH_CARD_TYPE_IQD: 183 return "HiperSockets"; 184 case QETH_CARD_TYPE_OSN: 185 return "OSN"; 186 case QETH_CARD_TYPE_OSM: 187 return "OSM_1000"; 188 case QETH_CARD_TYPE_OSX: 189 return "OSX_10GIG"; 190 default: 191 return "unknown"; 192 } 193 } 194 return "n/a"; 195 } 196 197 void qeth_set_recovery_task(struct qeth_card *card) 198 { 199 card->recovery_task = current; 200 } 201 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 202 203 void qeth_clear_recovery_task(struct qeth_card *card) 204 { 205 card->recovery_task = NULL; 206 } 207 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 208 209 static bool qeth_is_recovery_task(const struct qeth_card *card) 210 { 211 return card->recovery_task == current; 212 } 213 214 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 215 int clear_start_mask) 216 { 217 unsigned long flags; 218 219 spin_lock_irqsave(&card->thread_mask_lock, flags); 220 card->thread_allowed_mask = threads; 221 if (clear_start_mask) 222 card->thread_start_mask &= threads; 223 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 224 wake_up(&card->wait_q); 225 } 226 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 227 228 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 229 { 230 unsigned long flags; 231 int rc = 0; 232 233 spin_lock_irqsave(&card->thread_mask_lock, flags); 234 rc = (card->thread_running_mask & threads); 235 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 236 return rc; 237 } 238 EXPORT_SYMBOL_GPL(qeth_threads_running); 239 240 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 241 { 242 if (qeth_is_recovery_task(card)) 243 return 0; 244 return wait_event_interruptible(card->wait_q, 245 qeth_threads_running(card, threads) == 0); 246 } 247 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 248 249 void qeth_clear_working_pool_list(struct qeth_card *card) 250 { 251 struct qeth_buffer_pool_entry *pool_entry, *tmp; 252 253 QETH_CARD_TEXT(card, 5, "clwrklst"); 254 list_for_each_entry_safe(pool_entry, tmp, 255 &card->qdio.in_buf_pool.entry_list, list){ 256 list_del(&pool_entry->list); 257 } 258 } 259 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 260 261 static int qeth_alloc_buffer_pool(struct qeth_card *card) 262 { 263 struct qeth_buffer_pool_entry *pool_entry; 264 void *ptr; 265 int i, j; 266 267 QETH_CARD_TEXT(card, 5, "alocpool"); 268 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 269 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 270 if (!pool_entry) { 271 qeth_free_buffer_pool(card); 272 return -ENOMEM; 273 } 274 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 275 ptr = (void *) __get_free_page(GFP_KERNEL); 276 if (!ptr) { 277 while (j > 0) 278 free_page((unsigned long) 279 pool_entry->elements[--j]); 280 kfree(pool_entry); 281 qeth_free_buffer_pool(card); 282 return -ENOMEM; 283 } 284 pool_entry->elements[j] = ptr; 285 } 286 list_add(&pool_entry->init_list, 287 &card->qdio.init_pool.entry_list); 288 } 289 return 0; 290 } 291 292 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 293 { 294 QETH_CARD_TEXT(card, 2, "realcbp"); 295 296 if ((card->state != CARD_STATE_DOWN) && 297 (card->state != CARD_STATE_RECOVER)) 298 return -EPERM; 299 300 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 301 qeth_clear_working_pool_list(card); 302 qeth_free_buffer_pool(card); 303 card->qdio.in_buf_pool.buf_count = bufcnt; 304 card->qdio.init_pool.buf_count = bufcnt; 305 return qeth_alloc_buffer_pool(card); 306 } 307 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 308 309 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 310 { 311 if (!q) 312 return; 313 314 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 315 kfree(q); 316 } 317 318 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 319 { 320 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 321 int i; 322 323 if (!q) 324 return NULL; 325 326 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 327 kfree(q); 328 return NULL; 329 } 330 331 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 332 q->bufs[i].buffer = q->qdio_bufs[i]; 333 334 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 335 return q; 336 } 337 338 static int qeth_cq_init(struct qeth_card *card) 339 { 340 int rc; 341 342 if (card->options.cq == QETH_CQ_ENABLED) { 343 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 344 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 345 QDIO_MAX_BUFFERS_PER_Q); 346 card->qdio.c_q->next_buf_to_init = 127; 347 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 348 card->qdio.no_in_queues - 1, 0, 349 127); 350 if (rc) { 351 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 352 goto out; 353 } 354 } 355 rc = 0; 356 out: 357 return rc; 358 } 359 360 static int qeth_alloc_cq(struct qeth_card *card) 361 { 362 int rc; 363 364 if (card->options.cq == QETH_CQ_ENABLED) { 365 int i; 366 struct qdio_outbuf_state *outbuf_states; 367 368 QETH_DBF_TEXT(SETUP, 2, "cqon"); 369 card->qdio.c_q = qeth_alloc_qdio_queue(); 370 if (!card->qdio.c_q) { 371 rc = -1; 372 goto kmsg_out; 373 } 374 card->qdio.no_in_queues = 2; 375 card->qdio.out_bufstates = 376 kzalloc(card->qdio.no_out_queues * 377 QDIO_MAX_BUFFERS_PER_Q * 378 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 379 outbuf_states = card->qdio.out_bufstates; 380 if (outbuf_states == NULL) { 381 rc = -1; 382 goto free_cq_out; 383 } 384 for (i = 0; i < card->qdio.no_out_queues; ++i) { 385 card->qdio.out_qs[i]->bufstates = outbuf_states; 386 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 387 } 388 } else { 389 QETH_DBF_TEXT(SETUP, 2, "nocq"); 390 card->qdio.c_q = NULL; 391 card->qdio.no_in_queues = 1; 392 } 393 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 394 rc = 0; 395 out: 396 return rc; 397 free_cq_out: 398 qeth_free_qdio_queue(card->qdio.c_q); 399 card->qdio.c_q = NULL; 400 kmsg_out: 401 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 402 goto out; 403 } 404 405 static void qeth_free_cq(struct qeth_card *card) 406 { 407 if (card->qdio.c_q) { 408 --card->qdio.no_in_queues; 409 qeth_free_qdio_queue(card->qdio.c_q); 410 card->qdio.c_q = NULL; 411 } 412 kfree(card->qdio.out_bufstates); 413 card->qdio.out_bufstates = NULL; 414 } 415 416 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 417 int delayed) 418 { 419 enum iucv_tx_notify n; 420 421 switch (sbalf15) { 422 case 0: 423 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 424 break; 425 case 4: 426 case 16: 427 case 17: 428 case 18: 429 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 430 TX_NOTIFY_UNREACHABLE; 431 break; 432 default: 433 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 434 TX_NOTIFY_GENERALERROR; 435 break; 436 } 437 438 return n; 439 } 440 441 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 442 int forced_cleanup) 443 { 444 if (q->card->options.cq != QETH_CQ_ENABLED) 445 return; 446 447 if (q->bufs[bidx]->next_pending != NULL) { 448 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 449 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 450 451 while (c) { 452 if (forced_cleanup || 453 atomic_read(&c->state) == 454 QETH_QDIO_BUF_HANDLED_DELAYED) { 455 struct qeth_qdio_out_buffer *f = c; 456 QETH_CARD_TEXT(f->q->card, 5, "fp"); 457 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 458 /* release here to avoid interleaving between 459 outbound tasklet and inbound tasklet 460 regarding notifications and lifecycle */ 461 qeth_release_skbs(c); 462 463 c = f->next_pending; 464 WARN_ON_ONCE(head->next_pending != f); 465 head->next_pending = c; 466 kmem_cache_free(qeth_qdio_outbuf_cache, f); 467 } else { 468 head = c; 469 c = c->next_pending; 470 } 471 472 } 473 } 474 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 475 QETH_QDIO_BUF_HANDLED_DELAYED)) { 476 /* for recovery situations */ 477 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 478 qeth_init_qdio_out_buf(q, bidx); 479 QETH_CARD_TEXT(q->card, 2, "clprecov"); 480 } 481 } 482 483 484 static void qeth_qdio_handle_aob(struct qeth_card *card, 485 unsigned long phys_aob_addr) 486 { 487 struct qaob *aob; 488 struct qeth_qdio_out_buffer *buffer; 489 enum iucv_tx_notify notification; 490 491 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 492 QETH_CARD_TEXT(card, 5, "haob"); 493 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 494 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 495 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 496 497 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 498 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 499 notification = TX_NOTIFY_OK; 500 } else { 501 WARN_ON_ONCE(atomic_read(&buffer->state) != 502 QETH_QDIO_BUF_PENDING); 503 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 504 notification = TX_NOTIFY_DELAYED_OK; 505 } 506 507 if (aob->aorc != 0) { 508 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 509 notification = qeth_compute_cq_notification(aob->aorc, 1); 510 } 511 qeth_notify_skbs(buffer->q, buffer, notification); 512 513 buffer->aob = NULL; 514 qeth_clear_output_buffer(buffer->q, buffer, 515 QETH_QDIO_BUF_HANDLED_DELAYED); 516 517 /* from here on: do not touch buffer anymore */ 518 qdio_release_aob(aob); 519 } 520 521 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 522 { 523 return card->options.cq == QETH_CQ_ENABLED && 524 card->qdio.c_q != NULL && 525 queue != 0 && 526 queue == card->qdio.no_in_queues - 1; 527 } 528 529 530 static int qeth_issue_next_read(struct qeth_card *card) 531 { 532 int rc; 533 struct qeth_cmd_buffer *iob; 534 535 QETH_CARD_TEXT(card, 5, "issnxrd"); 536 if (card->read.state != CH_STATE_UP) 537 return -EIO; 538 iob = qeth_get_buffer(&card->read); 539 if (!iob) { 540 dev_warn(&card->gdev->dev, "The qeth device driver " 541 "failed to recover an error on the device\n"); 542 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 543 "available\n", dev_name(&card->gdev->dev)); 544 return -ENOMEM; 545 } 546 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 547 QETH_CARD_TEXT(card, 6, "noirqpnd"); 548 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 549 (addr_t) iob, 0, 0); 550 if (rc) { 551 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 552 "rc=%i\n", dev_name(&card->gdev->dev), rc); 553 atomic_set(&card->read.irq_pending, 0); 554 card->read_or_write_problem = 1; 555 qeth_schedule_recovery(card); 556 wake_up(&card->wait_q); 557 } 558 return rc; 559 } 560 561 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 562 { 563 struct qeth_reply *reply; 564 565 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 566 if (reply) { 567 refcount_set(&reply->refcnt, 1); 568 atomic_set(&reply->received, 0); 569 reply->card = card; 570 } 571 return reply; 572 } 573 574 static void qeth_get_reply(struct qeth_reply *reply) 575 { 576 refcount_inc(&reply->refcnt); 577 } 578 579 static void qeth_put_reply(struct qeth_reply *reply) 580 { 581 if (refcount_dec_and_test(&reply->refcnt)) 582 kfree(reply); 583 } 584 585 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 586 struct qeth_card *card) 587 { 588 char *ipa_name; 589 int com = cmd->hdr.command; 590 ipa_name = qeth_get_ipa_cmd_name(com); 591 if (rc) 592 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 593 "x%X \"%s\"\n", 594 ipa_name, com, dev_name(&card->gdev->dev), 595 QETH_CARD_IFNAME(card), rc, 596 qeth_get_ipa_msg(rc)); 597 else 598 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 599 ipa_name, com, dev_name(&card->gdev->dev), 600 QETH_CARD_IFNAME(card)); 601 } 602 603 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 604 struct qeth_cmd_buffer *iob) 605 { 606 struct qeth_ipa_cmd *cmd = NULL; 607 608 QETH_CARD_TEXT(card, 5, "chkipad"); 609 if (IS_IPA(iob->data)) { 610 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 611 if (IS_IPA_REPLY(cmd)) { 612 if (cmd->hdr.command != IPA_CMD_SETCCID && 613 cmd->hdr.command != IPA_CMD_DELCCID && 614 cmd->hdr.command != IPA_CMD_MODCCID && 615 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 616 qeth_issue_ipa_msg(cmd, 617 cmd->hdr.return_code, card); 618 return cmd; 619 } else { 620 switch (cmd->hdr.command) { 621 case IPA_CMD_STOPLAN: 622 if (cmd->hdr.return_code == 623 IPA_RC_VEPA_TO_VEB_TRANSITION) { 624 dev_err(&card->gdev->dev, 625 "Interface %s is down because the " 626 "adjacent port is no longer in " 627 "reflective relay mode\n", 628 QETH_CARD_IFNAME(card)); 629 qeth_close_dev(card); 630 } else { 631 dev_warn(&card->gdev->dev, 632 "The link for interface %s on CHPID" 633 " 0x%X failed\n", 634 QETH_CARD_IFNAME(card), 635 card->info.chpid); 636 qeth_issue_ipa_msg(cmd, 637 cmd->hdr.return_code, card); 638 } 639 card->lan_online = 0; 640 if (card->dev && netif_carrier_ok(card->dev)) 641 netif_carrier_off(card->dev); 642 return NULL; 643 case IPA_CMD_STARTLAN: 644 dev_info(&card->gdev->dev, 645 "The link for %s on CHPID 0x%X has" 646 " been restored\n", 647 QETH_CARD_IFNAME(card), 648 card->info.chpid); 649 netif_carrier_on(card->dev); 650 card->lan_online = 1; 651 if (card->info.hwtrap) 652 card->info.hwtrap = 2; 653 qeth_schedule_recovery(card); 654 return NULL; 655 case IPA_CMD_SETBRIDGEPORT_IQD: 656 case IPA_CMD_SETBRIDGEPORT_OSA: 657 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 658 if (card->discipline->control_event_handler 659 (card, cmd)) 660 return cmd; 661 else 662 return NULL; 663 case IPA_CMD_MODCCID: 664 return cmd; 665 case IPA_CMD_REGISTER_LOCAL_ADDR: 666 QETH_CARD_TEXT(card, 3, "irla"); 667 break; 668 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 669 QETH_CARD_TEXT(card, 3, "urla"); 670 break; 671 default: 672 QETH_DBF_MESSAGE(2, "Received data is IPA " 673 "but not a reply!\n"); 674 break; 675 } 676 } 677 } 678 return cmd; 679 } 680 681 void qeth_clear_ipacmd_list(struct qeth_card *card) 682 { 683 struct qeth_reply *reply, *r; 684 unsigned long flags; 685 686 QETH_CARD_TEXT(card, 4, "clipalst"); 687 688 spin_lock_irqsave(&card->lock, flags); 689 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 690 qeth_get_reply(reply); 691 reply->rc = -EIO; 692 atomic_inc(&reply->received); 693 list_del_init(&reply->list); 694 wake_up(&reply->wait_q); 695 qeth_put_reply(reply); 696 } 697 spin_unlock_irqrestore(&card->lock, flags); 698 atomic_set(&card->write.irq_pending, 0); 699 } 700 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 701 702 static int qeth_check_idx_response(struct qeth_card *card, 703 unsigned char *buffer) 704 { 705 if (!buffer) 706 return 0; 707 708 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 709 if ((buffer[2] & 0xc0) == 0xc0) { 710 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 711 "with cause code 0x%02x%s\n", 712 buffer[4], 713 ((buffer[4] == 0x22) ? 714 " -- try another portname" : "")); 715 QETH_CARD_TEXT(card, 2, "ckidxres"); 716 QETH_CARD_TEXT(card, 2, " idxterm"); 717 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 718 if (buffer[4] == 0xf6) { 719 dev_err(&card->gdev->dev, 720 "The qeth device is not configured " 721 "for the OSI layer required by z/VM\n"); 722 return -EPERM; 723 } 724 return -EIO; 725 } 726 return 0; 727 } 728 729 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 730 { 731 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 732 dev_get_drvdata(&cdev->dev))->dev); 733 return card; 734 } 735 736 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 737 __u32 len) 738 { 739 struct qeth_card *card; 740 741 card = CARD_FROM_CDEV(channel->ccwdev); 742 QETH_CARD_TEXT(card, 4, "setupccw"); 743 if (channel == &card->read) 744 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 745 else 746 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 747 channel->ccw.count = len; 748 channel->ccw.cda = (__u32) __pa(iob); 749 } 750 751 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 752 { 753 __u8 index; 754 755 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 756 index = channel->io_buf_no; 757 do { 758 if (channel->iob[index].state == BUF_STATE_FREE) { 759 channel->iob[index].state = BUF_STATE_LOCKED; 760 channel->io_buf_no = (channel->io_buf_no + 1) % 761 QETH_CMD_BUFFER_NO; 762 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 763 return channel->iob + index; 764 } 765 index = (index + 1) % QETH_CMD_BUFFER_NO; 766 } while (index != channel->io_buf_no); 767 768 return NULL; 769 } 770 771 void qeth_release_buffer(struct qeth_channel *channel, 772 struct qeth_cmd_buffer *iob) 773 { 774 unsigned long flags; 775 776 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 777 spin_lock_irqsave(&channel->iob_lock, flags); 778 memset(iob->data, 0, QETH_BUFSIZE); 779 iob->state = BUF_STATE_FREE; 780 iob->callback = qeth_send_control_data_cb; 781 iob->rc = 0; 782 spin_unlock_irqrestore(&channel->iob_lock, flags); 783 wake_up(&channel->wait_q); 784 } 785 EXPORT_SYMBOL_GPL(qeth_release_buffer); 786 787 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 788 { 789 struct qeth_cmd_buffer *buffer = NULL; 790 unsigned long flags; 791 792 spin_lock_irqsave(&channel->iob_lock, flags); 793 buffer = __qeth_get_buffer(channel); 794 spin_unlock_irqrestore(&channel->iob_lock, flags); 795 return buffer; 796 } 797 798 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 799 { 800 struct qeth_cmd_buffer *buffer; 801 wait_event(channel->wait_q, 802 ((buffer = qeth_get_buffer(channel)) != NULL)); 803 return buffer; 804 } 805 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 806 807 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 808 { 809 int cnt; 810 811 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 812 qeth_release_buffer(channel, &channel->iob[cnt]); 813 channel->buf_no = 0; 814 channel->io_buf_no = 0; 815 } 816 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 817 818 static void qeth_send_control_data_cb(struct qeth_channel *channel, 819 struct qeth_cmd_buffer *iob) 820 { 821 struct qeth_card *card; 822 struct qeth_reply *reply, *r; 823 struct qeth_ipa_cmd *cmd; 824 unsigned long flags; 825 int keep_reply; 826 int rc = 0; 827 828 card = CARD_FROM_CDEV(channel->ccwdev); 829 QETH_CARD_TEXT(card, 4, "sndctlcb"); 830 rc = qeth_check_idx_response(card, iob->data); 831 switch (rc) { 832 case 0: 833 break; 834 case -EIO: 835 qeth_clear_ipacmd_list(card); 836 qeth_schedule_recovery(card); 837 /* fall through */ 838 default: 839 goto out; 840 } 841 842 cmd = qeth_check_ipa_data(card, iob); 843 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 844 goto out; 845 /*in case of OSN : check if cmd is set */ 846 if (card->info.type == QETH_CARD_TYPE_OSN && 847 cmd && 848 cmd->hdr.command != IPA_CMD_STARTLAN && 849 card->osn_info.assist_cb != NULL) { 850 card->osn_info.assist_cb(card->dev, cmd); 851 goto out; 852 } 853 854 spin_lock_irqsave(&card->lock, flags); 855 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 856 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 857 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 858 qeth_get_reply(reply); 859 list_del_init(&reply->list); 860 spin_unlock_irqrestore(&card->lock, flags); 861 keep_reply = 0; 862 if (reply->callback != NULL) { 863 if (cmd) { 864 reply->offset = (__u16)((char *)cmd - 865 (char *)iob->data); 866 keep_reply = reply->callback(card, 867 reply, 868 (unsigned long)cmd); 869 } else 870 keep_reply = reply->callback(card, 871 reply, 872 (unsigned long)iob); 873 } 874 if (cmd) 875 reply->rc = (u16) cmd->hdr.return_code; 876 else if (iob->rc) 877 reply->rc = iob->rc; 878 if (keep_reply) { 879 spin_lock_irqsave(&card->lock, flags); 880 list_add_tail(&reply->list, 881 &card->cmd_waiter_list); 882 spin_unlock_irqrestore(&card->lock, flags); 883 } else { 884 atomic_inc(&reply->received); 885 wake_up(&reply->wait_q); 886 } 887 qeth_put_reply(reply); 888 goto out; 889 } 890 } 891 spin_unlock_irqrestore(&card->lock, flags); 892 out: 893 memcpy(&card->seqno.pdu_hdr_ack, 894 QETH_PDU_HEADER_SEQ_NO(iob->data), 895 QETH_SEQ_NO_LENGTH); 896 qeth_release_buffer(channel, iob); 897 } 898 899 static int qeth_setup_channel(struct qeth_channel *channel) 900 { 901 int cnt; 902 903 QETH_DBF_TEXT(SETUP, 2, "setupch"); 904 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 905 channel->iob[cnt].data = 906 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 907 if (channel->iob[cnt].data == NULL) 908 break; 909 channel->iob[cnt].state = BUF_STATE_FREE; 910 channel->iob[cnt].channel = channel; 911 channel->iob[cnt].callback = qeth_send_control_data_cb; 912 channel->iob[cnt].rc = 0; 913 } 914 if (cnt < QETH_CMD_BUFFER_NO) { 915 while (cnt-- > 0) 916 kfree(channel->iob[cnt].data); 917 return -ENOMEM; 918 } 919 channel->buf_no = 0; 920 channel->io_buf_no = 0; 921 atomic_set(&channel->irq_pending, 0); 922 spin_lock_init(&channel->iob_lock); 923 924 init_waitqueue_head(&channel->wait_q); 925 return 0; 926 } 927 928 static int qeth_set_thread_start_bit(struct qeth_card *card, 929 unsigned long thread) 930 { 931 unsigned long flags; 932 933 spin_lock_irqsave(&card->thread_mask_lock, flags); 934 if (!(card->thread_allowed_mask & thread) || 935 (card->thread_start_mask & thread)) { 936 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 937 return -EPERM; 938 } 939 card->thread_start_mask |= thread; 940 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 941 return 0; 942 } 943 944 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 945 { 946 unsigned long flags; 947 948 spin_lock_irqsave(&card->thread_mask_lock, flags); 949 card->thread_start_mask &= ~thread; 950 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 951 wake_up(&card->wait_q); 952 } 953 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 954 955 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 956 { 957 unsigned long flags; 958 959 spin_lock_irqsave(&card->thread_mask_lock, flags); 960 card->thread_running_mask &= ~thread; 961 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 962 wake_up(&card->wait_q); 963 } 964 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 965 966 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 967 { 968 unsigned long flags; 969 int rc = 0; 970 971 spin_lock_irqsave(&card->thread_mask_lock, flags); 972 if (card->thread_start_mask & thread) { 973 if ((card->thread_allowed_mask & thread) && 974 !(card->thread_running_mask & thread)) { 975 rc = 1; 976 card->thread_start_mask &= ~thread; 977 card->thread_running_mask |= thread; 978 } else 979 rc = -EPERM; 980 } 981 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 982 return rc; 983 } 984 985 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 986 { 987 int rc = 0; 988 989 wait_event(card->wait_q, 990 (rc = __qeth_do_run_thread(card, thread)) >= 0); 991 return rc; 992 } 993 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 994 995 void qeth_schedule_recovery(struct qeth_card *card) 996 { 997 QETH_CARD_TEXT(card, 2, "startrec"); 998 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 999 schedule_work(&card->kernel_thread_starter); 1000 } 1001 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1002 1003 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1004 { 1005 int dstat, cstat; 1006 char *sense; 1007 struct qeth_card *card; 1008 1009 sense = (char *) irb->ecw; 1010 cstat = irb->scsw.cmd.cstat; 1011 dstat = irb->scsw.cmd.dstat; 1012 card = CARD_FROM_CDEV(cdev); 1013 1014 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1015 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1016 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1017 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1018 dev_warn(&cdev->dev, "The qeth device driver " 1019 "failed to recover an error on the device\n"); 1020 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1021 dev_name(&cdev->dev), dstat, cstat); 1022 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1023 16, 1, irb, 64, 1); 1024 return 1; 1025 } 1026 1027 if (dstat & DEV_STAT_UNIT_CHECK) { 1028 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1029 SENSE_RESETTING_EVENT_FLAG) { 1030 QETH_CARD_TEXT(card, 2, "REVIND"); 1031 return 1; 1032 } 1033 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1034 SENSE_COMMAND_REJECT_FLAG) { 1035 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1036 return 1; 1037 } 1038 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1039 QETH_CARD_TEXT(card, 2, "AFFE"); 1040 return 1; 1041 } 1042 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1043 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1044 return 0; 1045 } 1046 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1047 return 1; 1048 } 1049 return 0; 1050 } 1051 1052 static long __qeth_check_irb_error(struct ccw_device *cdev, 1053 unsigned long intparm, struct irb *irb) 1054 { 1055 struct qeth_card *card; 1056 1057 card = CARD_FROM_CDEV(cdev); 1058 1059 if (!card || !IS_ERR(irb)) 1060 return 0; 1061 1062 switch (PTR_ERR(irb)) { 1063 case -EIO: 1064 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1065 dev_name(&cdev->dev)); 1066 QETH_CARD_TEXT(card, 2, "ckirberr"); 1067 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1068 break; 1069 case -ETIMEDOUT: 1070 dev_warn(&cdev->dev, "A hardware operation timed out" 1071 " on the device\n"); 1072 QETH_CARD_TEXT(card, 2, "ckirberr"); 1073 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1074 if (intparm == QETH_RCD_PARM) { 1075 if (card->data.ccwdev == cdev) { 1076 card->data.state = CH_STATE_DOWN; 1077 wake_up(&card->wait_q); 1078 } 1079 } 1080 break; 1081 default: 1082 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1083 dev_name(&cdev->dev), PTR_ERR(irb)); 1084 QETH_CARD_TEXT(card, 2, "ckirberr"); 1085 QETH_CARD_TEXT(card, 2, " rc???"); 1086 } 1087 return PTR_ERR(irb); 1088 } 1089 1090 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1091 struct irb *irb) 1092 { 1093 int rc; 1094 int cstat, dstat; 1095 struct qeth_cmd_buffer *buffer; 1096 struct qeth_channel *channel; 1097 struct qeth_card *card; 1098 struct qeth_cmd_buffer *iob; 1099 __u8 index; 1100 1101 if (__qeth_check_irb_error(cdev, intparm, irb)) 1102 return; 1103 cstat = irb->scsw.cmd.cstat; 1104 dstat = irb->scsw.cmd.dstat; 1105 1106 card = CARD_FROM_CDEV(cdev); 1107 if (!card) 1108 return; 1109 1110 QETH_CARD_TEXT(card, 5, "irq"); 1111 1112 if (card->read.ccwdev == cdev) { 1113 channel = &card->read; 1114 QETH_CARD_TEXT(card, 5, "read"); 1115 } else if (card->write.ccwdev == cdev) { 1116 channel = &card->write; 1117 QETH_CARD_TEXT(card, 5, "write"); 1118 } else { 1119 channel = &card->data; 1120 QETH_CARD_TEXT(card, 5, "data"); 1121 } 1122 atomic_set(&channel->irq_pending, 0); 1123 1124 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1125 channel->state = CH_STATE_STOPPED; 1126 1127 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1128 channel->state = CH_STATE_HALTED; 1129 1130 /*let's wake up immediately on data channel*/ 1131 if ((channel == &card->data) && (intparm != 0) && 1132 (intparm != QETH_RCD_PARM)) 1133 goto out; 1134 1135 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1136 QETH_CARD_TEXT(card, 6, "clrchpar"); 1137 /* we don't have to handle this further */ 1138 intparm = 0; 1139 } 1140 if (intparm == QETH_HALT_CHANNEL_PARM) { 1141 QETH_CARD_TEXT(card, 6, "hltchpar"); 1142 /* we don't have to handle this further */ 1143 intparm = 0; 1144 } 1145 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1146 (dstat & DEV_STAT_UNIT_CHECK) || 1147 (cstat)) { 1148 if (irb->esw.esw0.erw.cons) { 1149 dev_warn(&channel->ccwdev->dev, 1150 "The qeth device driver failed to recover " 1151 "an error on the device\n"); 1152 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1153 "0x%X dstat 0x%X\n", 1154 dev_name(&channel->ccwdev->dev), cstat, dstat); 1155 print_hex_dump(KERN_WARNING, "qeth: irb ", 1156 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1157 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1158 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1159 } 1160 if (intparm == QETH_RCD_PARM) { 1161 channel->state = CH_STATE_DOWN; 1162 goto out; 1163 } 1164 rc = qeth_get_problem(cdev, irb); 1165 if (rc) { 1166 qeth_clear_ipacmd_list(card); 1167 qeth_schedule_recovery(card); 1168 goto out; 1169 } 1170 } 1171 1172 if (intparm == QETH_RCD_PARM) { 1173 channel->state = CH_STATE_RCD_DONE; 1174 goto out; 1175 } 1176 if (intparm) { 1177 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1178 buffer->state = BUF_STATE_PROCESSED; 1179 } 1180 if (channel == &card->data) 1181 return; 1182 if (channel == &card->read && 1183 channel->state == CH_STATE_UP) 1184 qeth_issue_next_read(card); 1185 1186 iob = channel->iob; 1187 index = channel->buf_no; 1188 while (iob[index].state == BUF_STATE_PROCESSED) { 1189 if (iob[index].callback != NULL) 1190 iob[index].callback(channel, iob + index); 1191 1192 index = (index + 1) % QETH_CMD_BUFFER_NO; 1193 } 1194 channel->buf_no = index; 1195 out: 1196 wake_up(&card->wait_q); 1197 return; 1198 } 1199 1200 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1201 struct qeth_qdio_out_buffer *buf, 1202 enum iucv_tx_notify notification) 1203 { 1204 struct sk_buff *skb; 1205 1206 if (skb_queue_empty(&buf->skb_list)) 1207 goto out; 1208 skb = skb_peek(&buf->skb_list); 1209 while (skb) { 1210 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1211 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1212 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1213 if (skb->sk) { 1214 struct iucv_sock *iucv = iucv_sk(skb->sk); 1215 iucv->sk_txnotify(skb, notification); 1216 } 1217 } 1218 if (skb_queue_is_last(&buf->skb_list, skb)) 1219 skb = NULL; 1220 else 1221 skb = skb_queue_next(&buf->skb_list, skb); 1222 } 1223 out: 1224 return; 1225 } 1226 1227 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1228 { 1229 struct sk_buff *skb; 1230 struct iucv_sock *iucv; 1231 int notify_general_error = 0; 1232 1233 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1234 notify_general_error = 1; 1235 1236 /* release may never happen from within CQ tasklet scope */ 1237 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1238 1239 skb = skb_dequeue(&buf->skb_list); 1240 while (skb) { 1241 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1242 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1243 if (notify_general_error && 1244 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1245 if (skb->sk) { 1246 iucv = iucv_sk(skb->sk); 1247 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1248 } 1249 } 1250 refcount_dec(&skb->users); 1251 dev_kfree_skb_any(skb); 1252 skb = skb_dequeue(&buf->skb_list); 1253 } 1254 } 1255 1256 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1257 struct qeth_qdio_out_buffer *buf, 1258 enum qeth_qdio_buffer_states newbufstate) 1259 { 1260 int i; 1261 1262 /* is PCI flag set on buffer? */ 1263 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1264 atomic_dec(&queue->set_pci_flags_count); 1265 1266 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1267 qeth_release_skbs(buf); 1268 } 1269 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1270 if (buf->buffer->element[i].addr && buf->is_header[i]) 1271 kmem_cache_free(qeth_core_header_cache, 1272 buf->buffer->element[i].addr); 1273 buf->is_header[i] = 0; 1274 buf->buffer->element[i].length = 0; 1275 buf->buffer->element[i].addr = NULL; 1276 buf->buffer->element[i].eflags = 0; 1277 buf->buffer->element[i].sflags = 0; 1278 } 1279 buf->buffer->element[15].eflags = 0; 1280 buf->buffer->element[15].sflags = 0; 1281 buf->next_element_to_fill = 0; 1282 atomic_set(&buf->state, newbufstate); 1283 } 1284 1285 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1286 { 1287 int j; 1288 1289 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1290 if (!q->bufs[j]) 1291 continue; 1292 qeth_cleanup_handled_pending(q, j, 1); 1293 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1294 if (free) { 1295 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1296 q->bufs[j] = NULL; 1297 } 1298 } 1299 } 1300 1301 void qeth_clear_qdio_buffers(struct qeth_card *card) 1302 { 1303 int i; 1304 1305 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1306 /* clear outbound buffers to free skbs */ 1307 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1308 if (card->qdio.out_qs[i]) { 1309 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1310 } 1311 } 1312 } 1313 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1314 1315 static void qeth_free_buffer_pool(struct qeth_card *card) 1316 { 1317 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1318 int i = 0; 1319 list_for_each_entry_safe(pool_entry, tmp, 1320 &card->qdio.init_pool.entry_list, init_list){ 1321 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1322 free_page((unsigned long)pool_entry->elements[i]); 1323 list_del(&pool_entry->init_list); 1324 kfree(pool_entry); 1325 } 1326 } 1327 1328 static void qeth_clean_channel(struct qeth_channel *channel) 1329 { 1330 int cnt; 1331 1332 QETH_DBF_TEXT(SETUP, 2, "freech"); 1333 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1334 kfree(channel->iob[cnt].data); 1335 } 1336 1337 static void qeth_set_single_write_queues(struct qeth_card *card) 1338 { 1339 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1340 (card->qdio.no_out_queues == 4)) 1341 qeth_free_qdio_buffers(card); 1342 1343 card->qdio.no_out_queues = 1; 1344 if (card->qdio.default_out_queue != 0) 1345 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1346 1347 card->qdio.default_out_queue = 0; 1348 } 1349 1350 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1351 { 1352 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1353 (card->qdio.no_out_queues == 1)) { 1354 qeth_free_qdio_buffers(card); 1355 card->qdio.default_out_queue = 2; 1356 } 1357 card->qdio.no_out_queues = 4; 1358 } 1359 1360 static void qeth_update_from_chp_desc(struct qeth_card *card) 1361 { 1362 struct ccw_device *ccwdev; 1363 struct channel_path_desc *chp_dsc; 1364 1365 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1366 1367 ccwdev = card->data.ccwdev; 1368 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1369 if (!chp_dsc) 1370 goto out; 1371 1372 card->info.func_level = 0x4100 + chp_dsc->desc; 1373 if (card->info.type == QETH_CARD_TYPE_IQD) 1374 goto out; 1375 1376 /* CHPP field bit 6 == 1 -> single queue */ 1377 if ((chp_dsc->chpp & 0x02) == 0x02) 1378 qeth_set_single_write_queues(card); 1379 else 1380 qeth_set_multiple_write_queues(card); 1381 out: 1382 kfree(chp_dsc); 1383 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1384 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1385 } 1386 1387 static void qeth_init_qdio_info(struct qeth_card *card) 1388 { 1389 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1390 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1391 /* inbound */ 1392 card->qdio.no_in_queues = 1; 1393 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1394 if (card->info.type == QETH_CARD_TYPE_IQD) 1395 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1396 else 1397 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1398 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1399 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1400 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1401 } 1402 1403 static void qeth_set_intial_options(struct qeth_card *card) 1404 { 1405 card->options.route4.type = NO_ROUTER; 1406 card->options.route6.type = NO_ROUTER; 1407 card->options.fake_broadcast = 0; 1408 card->options.performance_stats = 0; 1409 card->options.rx_sg_cb = QETH_RX_SG_CB; 1410 card->options.isolation = ISOLATION_MODE_NONE; 1411 card->options.cq = QETH_CQ_DISABLED; 1412 } 1413 1414 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1415 { 1416 unsigned long flags; 1417 int rc = 0; 1418 1419 spin_lock_irqsave(&card->thread_mask_lock, flags); 1420 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1421 (u8) card->thread_start_mask, 1422 (u8) card->thread_allowed_mask, 1423 (u8) card->thread_running_mask); 1424 rc = (card->thread_start_mask & thread); 1425 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1426 return rc; 1427 } 1428 1429 static void qeth_start_kernel_thread(struct work_struct *work) 1430 { 1431 struct task_struct *ts; 1432 struct qeth_card *card = container_of(work, struct qeth_card, 1433 kernel_thread_starter); 1434 QETH_CARD_TEXT(card , 2, "strthrd"); 1435 1436 if (card->read.state != CH_STATE_UP && 1437 card->write.state != CH_STATE_UP) 1438 return; 1439 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1440 ts = kthread_run(card->discipline->recover, (void *)card, 1441 "qeth_recover"); 1442 if (IS_ERR(ts)) { 1443 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1444 qeth_clear_thread_running_bit(card, 1445 QETH_RECOVER_THREAD); 1446 } 1447 } 1448 } 1449 1450 static void qeth_buffer_reclaim_work(struct work_struct *); 1451 static int qeth_setup_card(struct qeth_card *card) 1452 { 1453 1454 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1455 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1456 1457 card->read.state = CH_STATE_DOWN; 1458 card->write.state = CH_STATE_DOWN; 1459 card->data.state = CH_STATE_DOWN; 1460 card->state = CARD_STATE_DOWN; 1461 card->lan_online = 0; 1462 card->read_or_write_problem = 0; 1463 card->dev = NULL; 1464 spin_lock_init(&card->vlanlock); 1465 spin_lock_init(&card->mclock); 1466 spin_lock_init(&card->lock); 1467 spin_lock_init(&card->ip_lock); 1468 spin_lock_init(&card->thread_mask_lock); 1469 mutex_init(&card->conf_mutex); 1470 mutex_init(&card->discipline_mutex); 1471 card->thread_start_mask = 0; 1472 card->thread_allowed_mask = 0; 1473 card->thread_running_mask = 0; 1474 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1475 INIT_LIST_HEAD(&card->cmd_waiter_list); 1476 init_waitqueue_head(&card->wait_q); 1477 /* initial options */ 1478 qeth_set_intial_options(card); 1479 /* IP address takeover */ 1480 INIT_LIST_HEAD(&card->ipato.entries); 1481 card->ipato.enabled = false; 1482 card->ipato.invert4 = false; 1483 card->ipato.invert6 = false; 1484 /* init QDIO stuff */ 1485 qeth_init_qdio_info(card); 1486 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1487 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1488 return 0; 1489 } 1490 1491 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1492 { 1493 struct qeth_card *card = container_of(slr, struct qeth_card, 1494 qeth_service_level); 1495 if (card->info.mcl_level[0]) 1496 seq_printf(m, "qeth: %s firmware level %s\n", 1497 CARD_BUS_ID(card), card->info.mcl_level); 1498 } 1499 1500 static struct qeth_card *qeth_alloc_card(void) 1501 { 1502 struct qeth_card *card; 1503 1504 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1505 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1506 if (!card) 1507 goto out; 1508 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1509 if (qeth_setup_channel(&card->read)) 1510 goto out_ip; 1511 if (qeth_setup_channel(&card->write)) 1512 goto out_channel; 1513 card->options.layer2 = -1; 1514 card->qeth_service_level.seq_print = qeth_core_sl_print; 1515 register_service_level(&card->qeth_service_level); 1516 return card; 1517 1518 out_channel: 1519 qeth_clean_channel(&card->read); 1520 out_ip: 1521 kfree(card); 1522 out: 1523 return NULL; 1524 } 1525 1526 static void qeth_determine_card_type(struct qeth_card *card) 1527 { 1528 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1529 1530 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1531 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1532 card->info.type = CARD_RDEV(card)->id.driver_info; 1533 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1534 if (card->info.type == QETH_CARD_TYPE_IQD) 1535 card->info.is_multicast_different = 0x0103; 1536 qeth_update_from_chp_desc(card); 1537 } 1538 1539 static int qeth_clear_channel(struct qeth_channel *channel) 1540 { 1541 unsigned long flags; 1542 struct qeth_card *card; 1543 int rc; 1544 1545 card = CARD_FROM_CDEV(channel->ccwdev); 1546 QETH_CARD_TEXT(card, 3, "clearch"); 1547 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1548 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1549 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1550 1551 if (rc) 1552 return rc; 1553 rc = wait_event_interruptible_timeout(card->wait_q, 1554 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1555 if (rc == -ERESTARTSYS) 1556 return rc; 1557 if (channel->state != CH_STATE_STOPPED) 1558 return -ETIME; 1559 channel->state = CH_STATE_DOWN; 1560 return 0; 1561 } 1562 1563 static int qeth_halt_channel(struct qeth_channel *channel) 1564 { 1565 unsigned long flags; 1566 struct qeth_card *card; 1567 int rc; 1568 1569 card = CARD_FROM_CDEV(channel->ccwdev); 1570 QETH_CARD_TEXT(card, 3, "haltch"); 1571 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1572 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1573 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1574 1575 if (rc) 1576 return rc; 1577 rc = wait_event_interruptible_timeout(card->wait_q, 1578 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1579 if (rc == -ERESTARTSYS) 1580 return rc; 1581 if (channel->state != CH_STATE_HALTED) 1582 return -ETIME; 1583 return 0; 1584 } 1585 1586 static int qeth_halt_channels(struct qeth_card *card) 1587 { 1588 int rc1 = 0, rc2 = 0, rc3 = 0; 1589 1590 QETH_CARD_TEXT(card, 3, "haltchs"); 1591 rc1 = qeth_halt_channel(&card->read); 1592 rc2 = qeth_halt_channel(&card->write); 1593 rc3 = qeth_halt_channel(&card->data); 1594 if (rc1) 1595 return rc1; 1596 if (rc2) 1597 return rc2; 1598 return rc3; 1599 } 1600 1601 static int qeth_clear_channels(struct qeth_card *card) 1602 { 1603 int rc1 = 0, rc2 = 0, rc3 = 0; 1604 1605 QETH_CARD_TEXT(card, 3, "clearchs"); 1606 rc1 = qeth_clear_channel(&card->read); 1607 rc2 = qeth_clear_channel(&card->write); 1608 rc3 = qeth_clear_channel(&card->data); 1609 if (rc1) 1610 return rc1; 1611 if (rc2) 1612 return rc2; 1613 return rc3; 1614 } 1615 1616 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1617 { 1618 int rc = 0; 1619 1620 QETH_CARD_TEXT(card, 3, "clhacrd"); 1621 1622 if (halt) 1623 rc = qeth_halt_channels(card); 1624 if (rc) 1625 return rc; 1626 return qeth_clear_channels(card); 1627 } 1628 1629 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1630 { 1631 int rc = 0; 1632 1633 QETH_CARD_TEXT(card, 3, "qdioclr"); 1634 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1635 QETH_QDIO_CLEANING)) { 1636 case QETH_QDIO_ESTABLISHED: 1637 if (card->info.type == QETH_CARD_TYPE_IQD) 1638 rc = qdio_shutdown(CARD_DDEV(card), 1639 QDIO_FLAG_CLEANUP_USING_HALT); 1640 else 1641 rc = qdio_shutdown(CARD_DDEV(card), 1642 QDIO_FLAG_CLEANUP_USING_CLEAR); 1643 if (rc) 1644 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1645 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1646 break; 1647 case QETH_QDIO_CLEANING: 1648 return rc; 1649 default: 1650 break; 1651 } 1652 rc = qeth_clear_halt_card(card, use_halt); 1653 if (rc) 1654 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1655 card->state = CARD_STATE_DOWN; 1656 return rc; 1657 } 1658 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1659 1660 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1661 int *length) 1662 { 1663 struct ciw *ciw; 1664 char *rcd_buf; 1665 int ret; 1666 struct qeth_channel *channel = &card->data; 1667 unsigned long flags; 1668 1669 /* 1670 * scan for RCD command in extended SenseID data 1671 */ 1672 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1673 if (!ciw || ciw->cmd == 0) 1674 return -EOPNOTSUPP; 1675 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1676 if (!rcd_buf) 1677 return -ENOMEM; 1678 1679 channel->ccw.cmd_code = ciw->cmd; 1680 channel->ccw.cda = (__u32) __pa(rcd_buf); 1681 channel->ccw.count = ciw->count; 1682 channel->ccw.flags = CCW_FLAG_SLI; 1683 channel->state = CH_STATE_RCD; 1684 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1685 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1686 QETH_RCD_PARM, LPM_ANYPATH, 0, 1687 QETH_RCD_TIMEOUT); 1688 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1689 if (!ret) 1690 wait_event(card->wait_q, 1691 (channel->state == CH_STATE_RCD_DONE || 1692 channel->state == CH_STATE_DOWN)); 1693 if (channel->state == CH_STATE_DOWN) 1694 ret = -EIO; 1695 else 1696 channel->state = CH_STATE_DOWN; 1697 if (ret) { 1698 kfree(rcd_buf); 1699 *buffer = NULL; 1700 *length = 0; 1701 } else { 1702 *length = ciw->count; 1703 *buffer = rcd_buf; 1704 } 1705 return ret; 1706 } 1707 1708 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1709 { 1710 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1711 card->info.chpid = prcd[30]; 1712 card->info.unit_addr2 = prcd[31]; 1713 card->info.cula = prcd[63]; 1714 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1715 (prcd[0x11] == _ascebc['M'])); 1716 } 1717 1718 /* Determine whether the device requires a specific layer discipline */ 1719 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1720 { 1721 if (card->info.type == QETH_CARD_TYPE_OSM || 1722 card->info.type == QETH_CARD_TYPE_OSN) { 1723 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1724 return QETH_DISCIPLINE_LAYER2; 1725 } 1726 1727 /* virtual HiperSocket is L3 only: */ 1728 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) { 1729 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1730 return QETH_DISCIPLINE_LAYER3; 1731 } 1732 1733 QETH_DBF_TEXT(SETUP, 3, "force no"); 1734 return QETH_DISCIPLINE_UNDETERMINED; 1735 } 1736 1737 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1738 { 1739 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1740 1741 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1742 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1743 card->info.blkt.time_total = 0; 1744 card->info.blkt.inter_packet = 0; 1745 card->info.blkt.inter_packet_jumbo = 0; 1746 } else { 1747 card->info.blkt.time_total = 250; 1748 card->info.blkt.inter_packet = 5; 1749 card->info.blkt.inter_packet_jumbo = 15; 1750 } 1751 } 1752 1753 static void qeth_init_tokens(struct qeth_card *card) 1754 { 1755 card->token.issuer_rm_w = 0x00010103UL; 1756 card->token.cm_filter_w = 0x00010108UL; 1757 card->token.cm_connection_w = 0x0001010aUL; 1758 card->token.ulp_filter_w = 0x0001010bUL; 1759 card->token.ulp_connection_w = 0x0001010dUL; 1760 } 1761 1762 static void qeth_init_func_level(struct qeth_card *card) 1763 { 1764 switch (card->info.type) { 1765 case QETH_CARD_TYPE_IQD: 1766 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1767 break; 1768 case QETH_CARD_TYPE_OSD: 1769 case QETH_CARD_TYPE_OSN: 1770 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1771 break; 1772 default: 1773 break; 1774 } 1775 } 1776 1777 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1778 void (*idx_reply_cb)(struct qeth_channel *, 1779 struct qeth_cmd_buffer *)) 1780 { 1781 struct qeth_cmd_buffer *iob; 1782 unsigned long flags; 1783 int rc; 1784 struct qeth_card *card; 1785 1786 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1787 card = CARD_FROM_CDEV(channel->ccwdev); 1788 iob = qeth_get_buffer(channel); 1789 if (!iob) 1790 return -ENOMEM; 1791 iob->callback = idx_reply_cb; 1792 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1793 channel->ccw.count = QETH_BUFSIZE; 1794 channel->ccw.cda = (__u32) __pa(iob->data); 1795 1796 wait_event(card->wait_q, 1797 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1798 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1799 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1800 rc = ccw_device_start(channel->ccwdev, 1801 &channel->ccw, (addr_t) iob, 0, 0); 1802 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1803 1804 if (rc) { 1805 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1806 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1807 atomic_set(&channel->irq_pending, 0); 1808 wake_up(&card->wait_q); 1809 return rc; 1810 } 1811 rc = wait_event_interruptible_timeout(card->wait_q, 1812 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1813 if (rc == -ERESTARTSYS) 1814 return rc; 1815 if (channel->state != CH_STATE_UP) { 1816 rc = -ETIME; 1817 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1818 qeth_clear_cmd_buffers(channel); 1819 } else 1820 rc = 0; 1821 return rc; 1822 } 1823 1824 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1825 void (*idx_reply_cb)(struct qeth_channel *, 1826 struct qeth_cmd_buffer *)) 1827 { 1828 struct qeth_card *card; 1829 struct qeth_cmd_buffer *iob; 1830 unsigned long flags; 1831 __u16 temp; 1832 __u8 tmp; 1833 int rc; 1834 struct ccw_dev_id temp_devid; 1835 1836 card = CARD_FROM_CDEV(channel->ccwdev); 1837 1838 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1839 1840 iob = qeth_get_buffer(channel); 1841 if (!iob) 1842 return -ENOMEM; 1843 iob->callback = idx_reply_cb; 1844 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1845 channel->ccw.count = IDX_ACTIVATE_SIZE; 1846 channel->ccw.cda = (__u32) __pa(iob->data); 1847 if (channel == &card->write) { 1848 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1849 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1850 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1851 card->seqno.trans_hdr++; 1852 } else { 1853 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1854 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1855 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1856 } 1857 tmp = ((__u8)card->info.portno) | 0x80; 1858 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1859 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1860 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1861 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1862 &card->info.func_level, sizeof(__u16)); 1863 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1864 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1865 temp = (card->info.cula << 8) + card->info.unit_addr2; 1866 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1867 1868 wait_event(card->wait_q, 1869 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1870 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1871 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1872 rc = ccw_device_start(channel->ccwdev, 1873 &channel->ccw, (addr_t) iob, 0, 0); 1874 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1875 1876 if (rc) { 1877 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1878 rc); 1879 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1880 atomic_set(&channel->irq_pending, 0); 1881 wake_up(&card->wait_q); 1882 return rc; 1883 } 1884 rc = wait_event_interruptible_timeout(card->wait_q, 1885 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1886 if (rc == -ERESTARTSYS) 1887 return rc; 1888 if (channel->state != CH_STATE_ACTIVATING) { 1889 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1890 " failed to recover an error on the device\n"); 1891 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1892 dev_name(&channel->ccwdev->dev)); 1893 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1894 qeth_clear_cmd_buffers(channel); 1895 return -ETIME; 1896 } 1897 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1898 } 1899 1900 static int qeth_peer_func_level(int level) 1901 { 1902 if ((level & 0xff) == 8) 1903 return (level & 0xff) + 0x400; 1904 if (((level >> 8) & 3) == 1) 1905 return (level & 0xff) + 0x200; 1906 return level; 1907 } 1908 1909 static void qeth_idx_write_cb(struct qeth_channel *channel, 1910 struct qeth_cmd_buffer *iob) 1911 { 1912 struct qeth_card *card; 1913 __u16 temp; 1914 1915 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1916 1917 if (channel->state == CH_STATE_DOWN) { 1918 channel->state = CH_STATE_ACTIVATING; 1919 goto out; 1920 } 1921 card = CARD_FROM_CDEV(channel->ccwdev); 1922 1923 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1924 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1925 dev_err(&card->write.ccwdev->dev, 1926 "The adapter is used exclusively by another " 1927 "host\n"); 1928 else 1929 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1930 " negative reply\n", 1931 dev_name(&card->write.ccwdev->dev)); 1932 goto out; 1933 } 1934 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1935 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1936 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1937 "function level mismatch (sent: 0x%x, received: " 1938 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1939 card->info.func_level, temp); 1940 goto out; 1941 } 1942 channel->state = CH_STATE_UP; 1943 out: 1944 qeth_release_buffer(channel, iob); 1945 } 1946 1947 static void qeth_idx_read_cb(struct qeth_channel *channel, 1948 struct qeth_cmd_buffer *iob) 1949 { 1950 struct qeth_card *card; 1951 __u16 temp; 1952 1953 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1954 if (channel->state == CH_STATE_DOWN) { 1955 channel->state = CH_STATE_ACTIVATING; 1956 goto out; 1957 } 1958 1959 card = CARD_FROM_CDEV(channel->ccwdev); 1960 if (qeth_check_idx_response(card, iob->data)) 1961 goto out; 1962 1963 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1964 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1965 case QETH_IDX_ACT_ERR_EXCL: 1966 dev_err(&card->write.ccwdev->dev, 1967 "The adapter is used exclusively by another " 1968 "host\n"); 1969 break; 1970 case QETH_IDX_ACT_ERR_AUTH: 1971 case QETH_IDX_ACT_ERR_AUTH_USER: 1972 dev_err(&card->read.ccwdev->dev, 1973 "Setting the device online failed because of " 1974 "insufficient authorization\n"); 1975 break; 1976 default: 1977 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1978 " negative reply\n", 1979 dev_name(&card->read.ccwdev->dev)); 1980 } 1981 QETH_CARD_TEXT_(card, 2, "idxread%c", 1982 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1983 goto out; 1984 } 1985 1986 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1987 if (temp != qeth_peer_func_level(card->info.func_level)) { 1988 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1989 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1990 dev_name(&card->read.ccwdev->dev), 1991 card->info.func_level, temp); 1992 goto out; 1993 } 1994 memcpy(&card->token.issuer_rm_r, 1995 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1996 QETH_MPC_TOKEN_LENGTH); 1997 memcpy(&card->info.mcl_level[0], 1998 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1999 channel->state = CH_STATE_UP; 2000 out: 2001 qeth_release_buffer(channel, iob); 2002 } 2003 2004 void qeth_prepare_control_data(struct qeth_card *card, int len, 2005 struct qeth_cmd_buffer *iob) 2006 { 2007 qeth_setup_ccw(&card->write, iob->data, len); 2008 iob->callback = qeth_release_buffer; 2009 2010 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2011 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2012 card->seqno.trans_hdr++; 2013 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2014 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2015 card->seqno.pdu_hdr++; 2016 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2017 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2018 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2019 } 2020 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2021 2022 /** 2023 * qeth_send_control_data() - send control command to the card 2024 * @card: qeth_card structure pointer 2025 * @len: size of the command buffer 2026 * @iob: qeth_cmd_buffer pointer 2027 * @reply_cb: callback function pointer 2028 * @cb_card: pointer to the qeth_card structure 2029 * @cb_reply: pointer to the qeth_reply structure 2030 * @cb_cmd: pointer to the original iob for non-IPA 2031 * commands, or to the qeth_ipa_cmd structure 2032 * for the IPA commands. 2033 * @reply_param: private pointer passed to the callback 2034 * 2035 * Returns the value of the `return_code' field of the response 2036 * block returned from the hardware, or other error indication. 2037 * Value of zero indicates successful execution of the command. 2038 * 2039 * Callback function gets called one or more times, with cb_cmd 2040 * pointing to the response returned by the hardware. Callback 2041 * function must return non-zero if more reply blocks are expected, 2042 * and zero if the last or only reply block is received. Callback 2043 * function can get the value of the reply_param pointer from the 2044 * field 'param' of the structure qeth_reply. 2045 */ 2046 2047 int qeth_send_control_data(struct qeth_card *card, int len, 2048 struct qeth_cmd_buffer *iob, 2049 int (*reply_cb)(struct qeth_card *cb_card, 2050 struct qeth_reply *cb_reply, 2051 unsigned long cb_cmd), 2052 void *reply_param) 2053 { 2054 int rc; 2055 unsigned long flags; 2056 struct qeth_reply *reply = NULL; 2057 unsigned long timeout, event_timeout; 2058 struct qeth_ipa_cmd *cmd; 2059 2060 QETH_CARD_TEXT(card, 2, "sendctl"); 2061 2062 if (card->read_or_write_problem) { 2063 qeth_release_buffer(iob->channel, iob); 2064 return -EIO; 2065 } 2066 reply = qeth_alloc_reply(card); 2067 if (!reply) { 2068 return -ENOMEM; 2069 } 2070 reply->callback = reply_cb; 2071 reply->param = reply_param; 2072 if (card->state == CARD_STATE_DOWN) 2073 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2074 else 2075 reply->seqno = card->seqno.ipa++; 2076 init_waitqueue_head(&reply->wait_q); 2077 spin_lock_irqsave(&card->lock, flags); 2078 list_add_tail(&reply->list, &card->cmd_waiter_list); 2079 spin_unlock_irqrestore(&card->lock, flags); 2080 2081 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2082 qeth_prepare_control_data(card, len, iob); 2083 2084 if (IS_IPA(iob->data)) 2085 event_timeout = QETH_IPA_TIMEOUT; 2086 else 2087 event_timeout = QETH_TIMEOUT; 2088 timeout = jiffies + event_timeout; 2089 2090 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2091 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2092 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2093 (addr_t) iob, 0, 0); 2094 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2095 if (rc) { 2096 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2097 "ccw_device_start rc = %i\n", 2098 dev_name(&card->write.ccwdev->dev), rc); 2099 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2100 spin_lock_irqsave(&card->lock, flags); 2101 list_del_init(&reply->list); 2102 qeth_put_reply(reply); 2103 spin_unlock_irqrestore(&card->lock, flags); 2104 qeth_release_buffer(iob->channel, iob); 2105 atomic_set(&card->write.irq_pending, 0); 2106 wake_up(&card->wait_q); 2107 return rc; 2108 } 2109 2110 /* we have only one long running ipassist, since we can ensure 2111 process context of this command we can sleep */ 2112 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2113 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2114 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2115 if (!wait_event_timeout(reply->wait_q, 2116 atomic_read(&reply->received), event_timeout)) 2117 goto time_err; 2118 } else { 2119 while (!atomic_read(&reply->received)) { 2120 if (time_after(jiffies, timeout)) 2121 goto time_err; 2122 cpu_relax(); 2123 } 2124 } 2125 2126 if (reply->rc == -EIO) 2127 goto error; 2128 rc = reply->rc; 2129 qeth_put_reply(reply); 2130 return rc; 2131 2132 time_err: 2133 reply->rc = -ETIME; 2134 spin_lock_irqsave(&reply->card->lock, flags); 2135 list_del_init(&reply->list); 2136 spin_unlock_irqrestore(&reply->card->lock, flags); 2137 atomic_inc(&reply->received); 2138 error: 2139 atomic_set(&card->write.irq_pending, 0); 2140 qeth_release_buffer(iob->channel, iob); 2141 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2142 rc = reply->rc; 2143 qeth_put_reply(reply); 2144 return rc; 2145 } 2146 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2147 2148 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2149 unsigned long data) 2150 { 2151 struct qeth_cmd_buffer *iob; 2152 2153 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2154 2155 iob = (struct qeth_cmd_buffer *) data; 2156 memcpy(&card->token.cm_filter_r, 2157 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2158 QETH_MPC_TOKEN_LENGTH); 2159 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2160 return 0; 2161 } 2162 2163 static int qeth_cm_enable(struct qeth_card *card) 2164 { 2165 int rc; 2166 struct qeth_cmd_buffer *iob; 2167 2168 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2169 2170 iob = qeth_wait_for_buffer(&card->write); 2171 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2172 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2173 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2174 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2175 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2176 2177 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2178 qeth_cm_enable_cb, NULL); 2179 return rc; 2180 } 2181 2182 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2183 unsigned long data) 2184 { 2185 2186 struct qeth_cmd_buffer *iob; 2187 2188 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2189 2190 iob = (struct qeth_cmd_buffer *) data; 2191 memcpy(&card->token.cm_connection_r, 2192 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2193 QETH_MPC_TOKEN_LENGTH); 2194 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2195 return 0; 2196 } 2197 2198 static int qeth_cm_setup(struct qeth_card *card) 2199 { 2200 int rc; 2201 struct qeth_cmd_buffer *iob; 2202 2203 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2204 2205 iob = qeth_wait_for_buffer(&card->write); 2206 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2207 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2208 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2209 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2210 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2211 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2212 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2213 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2214 qeth_cm_setup_cb, NULL); 2215 return rc; 2216 2217 } 2218 2219 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2220 { 2221 switch (card->info.type) { 2222 case QETH_CARD_TYPE_IQD: 2223 return card->info.max_mtu; 2224 case QETH_CARD_TYPE_OSD: 2225 case QETH_CARD_TYPE_OSX: 2226 if (!card->options.layer2) 2227 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2228 /* fall through */ 2229 default: 2230 return ETH_DATA_LEN; 2231 } 2232 } 2233 2234 static int qeth_get_mtu_outof_framesize(int framesize) 2235 { 2236 switch (framesize) { 2237 case 0x4000: 2238 return 8192; 2239 case 0x6000: 2240 return 16384; 2241 case 0xa000: 2242 return 32768; 2243 case 0xffff: 2244 return 57344; 2245 default: 2246 return 0; 2247 } 2248 } 2249 2250 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2251 { 2252 switch (card->info.type) { 2253 case QETH_CARD_TYPE_OSD: 2254 case QETH_CARD_TYPE_OSM: 2255 case QETH_CARD_TYPE_OSX: 2256 case QETH_CARD_TYPE_IQD: 2257 return ((mtu >= 576) && 2258 (mtu <= card->info.max_mtu)); 2259 case QETH_CARD_TYPE_OSN: 2260 default: 2261 return 1; 2262 } 2263 } 2264 2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2266 unsigned long data) 2267 { 2268 2269 __u16 mtu, framesize; 2270 __u16 len; 2271 __u8 link_type; 2272 struct qeth_cmd_buffer *iob; 2273 2274 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2275 2276 iob = (struct qeth_cmd_buffer *) data; 2277 memcpy(&card->token.ulp_filter_r, 2278 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2279 QETH_MPC_TOKEN_LENGTH); 2280 if (card->info.type == QETH_CARD_TYPE_IQD) { 2281 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2282 mtu = qeth_get_mtu_outof_framesize(framesize); 2283 if (!mtu) { 2284 iob->rc = -EINVAL; 2285 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2286 return 0; 2287 } 2288 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2289 /* frame size has changed */ 2290 if (card->dev && 2291 ((card->dev->mtu == card->info.initial_mtu) || 2292 (card->dev->mtu > mtu))) 2293 card->dev->mtu = mtu; 2294 qeth_free_qdio_buffers(card); 2295 } 2296 card->info.initial_mtu = mtu; 2297 card->info.max_mtu = mtu; 2298 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2299 } else { 2300 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2301 iob->data); 2302 card->info.initial_mtu = min(card->info.max_mtu, 2303 qeth_get_initial_mtu_for_card(card)); 2304 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2305 } 2306 2307 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2308 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2309 memcpy(&link_type, 2310 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2311 card->info.link_type = link_type; 2312 } else 2313 card->info.link_type = 0; 2314 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2315 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2316 return 0; 2317 } 2318 2319 static int qeth_ulp_enable(struct qeth_card *card) 2320 { 2321 int rc; 2322 char prot_type; 2323 struct qeth_cmd_buffer *iob; 2324 2325 /*FIXME: trace view callbacks*/ 2326 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2327 2328 iob = qeth_wait_for_buffer(&card->write); 2329 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2330 2331 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2332 (__u8) card->info.portno; 2333 if (card->options.layer2) 2334 if (card->info.type == QETH_CARD_TYPE_OSN) 2335 prot_type = QETH_PROT_OSN2; 2336 else 2337 prot_type = QETH_PROT_LAYER2; 2338 else 2339 prot_type = QETH_PROT_TCPIP; 2340 2341 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2342 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2343 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2344 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2345 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2346 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2347 qeth_ulp_enable_cb, NULL); 2348 return rc; 2349 2350 } 2351 2352 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2353 unsigned long data) 2354 { 2355 struct qeth_cmd_buffer *iob; 2356 2357 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2358 2359 iob = (struct qeth_cmd_buffer *) data; 2360 memcpy(&card->token.ulp_connection_r, 2361 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2362 QETH_MPC_TOKEN_LENGTH); 2363 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2364 3)) { 2365 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2366 dev_err(&card->gdev->dev, "A connection could not be " 2367 "established because of an OLM limit\n"); 2368 iob->rc = -EMLINK; 2369 } 2370 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2371 return 0; 2372 } 2373 2374 static int qeth_ulp_setup(struct qeth_card *card) 2375 { 2376 int rc; 2377 __u16 temp; 2378 struct qeth_cmd_buffer *iob; 2379 struct ccw_dev_id dev_id; 2380 2381 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2382 2383 iob = qeth_wait_for_buffer(&card->write); 2384 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2385 2386 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2388 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2389 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2390 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2391 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2392 2393 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2394 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2395 temp = (card->info.cula << 8) + card->info.unit_addr2; 2396 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2397 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2398 qeth_ulp_setup_cb, NULL); 2399 return rc; 2400 } 2401 2402 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2403 { 2404 int rc; 2405 struct qeth_qdio_out_buffer *newbuf; 2406 2407 rc = 0; 2408 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2409 if (!newbuf) { 2410 rc = -ENOMEM; 2411 goto out; 2412 } 2413 newbuf->buffer = q->qdio_bufs[bidx]; 2414 skb_queue_head_init(&newbuf->skb_list); 2415 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2416 newbuf->q = q; 2417 newbuf->aob = NULL; 2418 newbuf->next_pending = q->bufs[bidx]; 2419 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2420 q->bufs[bidx] = newbuf; 2421 if (q->bufstates) { 2422 q->bufstates[bidx].user = newbuf; 2423 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2424 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2425 QETH_CARD_TEXT_(q->card, 2, "%lx", 2426 (long) newbuf->next_pending); 2427 } 2428 out: 2429 return rc; 2430 } 2431 2432 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2433 { 2434 if (!q) 2435 return; 2436 2437 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2438 kfree(q); 2439 } 2440 2441 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2442 { 2443 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2444 2445 if (!q) 2446 return NULL; 2447 2448 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2449 kfree(q); 2450 return NULL; 2451 } 2452 return q; 2453 } 2454 2455 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2456 { 2457 int i, j; 2458 2459 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2460 2461 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2462 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2463 return 0; 2464 2465 QETH_DBF_TEXT(SETUP, 2, "inq"); 2466 card->qdio.in_q = qeth_alloc_qdio_queue(); 2467 if (!card->qdio.in_q) 2468 goto out_nomem; 2469 2470 /* inbound buffer pool */ 2471 if (qeth_alloc_buffer_pool(card)) 2472 goto out_freeinq; 2473 2474 /* outbound */ 2475 card->qdio.out_qs = 2476 kzalloc(card->qdio.no_out_queues * 2477 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2478 if (!card->qdio.out_qs) 2479 goto out_freepool; 2480 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2481 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2482 if (!card->qdio.out_qs[i]) 2483 goto out_freeoutq; 2484 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2485 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2486 card->qdio.out_qs[i]->queue_no = i; 2487 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2488 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2489 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2490 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2491 goto out_freeoutqbufs; 2492 } 2493 } 2494 2495 /* completion */ 2496 if (qeth_alloc_cq(card)) 2497 goto out_freeoutq; 2498 2499 return 0; 2500 2501 out_freeoutqbufs: 2502 while (j > 0) { 2503 --j; 2504 kmem_cache_free(qeth_qdio_outbuf_cache, 2505 card->qdio.out_qs[i]->bufs[j]); 2506 card->qdio.out_qs[i]->bufs[j] = NULL; 2507 } 2508 out_freeoutq: 2509 while (i > 0) { 2510 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2511 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2512 } 2513 kfree(card->qdio.out_qs); 2514 card->qdio.out_qs = NULL; 2515 out_freepool: 2516 qeth_free_buffer_pool(card); 2517 out_freeinq: 2518 qeth_free_qdio_queue(card->qdio.in_q); 2519 card->qdio.in_q = NULL; 2520 out_nomem: 2521 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2522 return -ENOMEM; 2523 } 2524 2525 static void qeth_free_qdio_buffers(struct qeth_card *card) 2526 { 2527 int i, j; 2528 2529 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2530 QETH_QDIO_UNINITIALIZED) 2531 return; 2532 2533 qeth_free_cq(card); 2534 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2535 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2536 if (card->qdio.in_q->bufs[j].rx_skb) 2537 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2538 } 2539 qeth_free_qdio_queue(card->qdio.in_q); 2540 card->qdio.in_q = NULL; 2541 /* inbound buffer pool */ 2542 qeth_free_buffer_pool(card); 2543 /* free outbound qdio_qs */ 2544 if (card->qdio.out_qs) { 2545 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2546 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2547 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2548 } 2549 kfree(card->qdio.out_qs); 2550 card->qdio.out_qs = NULL; 2551 } 2552 } 2553 2554 static void qeth_create_qib_param_field(struct qeth_card *card, 2555 char *param_field) 2556 { 2557 2558 param_field[0] = _ascebc['P']; 2559 param_field[1] = _ascebc['C']; 2560 param_field[2] = _ascebc['I']; 2561 param_field[3] = _ascebc['T']; 2562 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2563 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2564 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2565 } 2566 2567 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2568 char *param_field) 2569 { 2570 param_field[16] = _ascebc['B']; 2571 param_field[17] = _ascebc['L']; 2572 param_field[18] = _ascebc['K']; 2573 param_field[19] = _ascebc['T']; 2574 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2575 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2576 *((unsigned int *) (¶m_field[28])) = 2577 card->info.blkt.inter_packet_jumbo; 2578 } 2579 2580 static int qeth_qdio_activate(struct qeth_card *card) 2581 { 2582 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2583 return qdio_activate(CARD_DDEV(card)); 2584 } 2585 2586 static int qeth_dm_act(struct qeth_card *card) 2587 { 2588 int rc; 2589 struct qeth_cmd_buffer *iob; 2590 2591 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2592 2593 iob = qeth_wait_for_buffer(&card->write); 2594 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2595 2596 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2597 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2598 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2599 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2600 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2601 return rc; 2602 } 2603 2604 static int qeth_mpc_initialize(struct qeth_card *card) 2605 { 2606 int rc; 2607 2608 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2609 2610 rc = qeth_issue_next_read(card); 2611 if (rc) { 2612 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2613 return rc; 2614 } 2615 rc = qeth_cm_enable(card); 2616 if (rc) { 2617 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2618 goto out_qdio; 2619 } 2620 rc = qeth_cm_setup(card); 2621 if (rc) { 2622 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2623 goto out_qdio; 2624 } 2625 rc = qeth_ulp_enable(card); 2626 if (rc) { 2627 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2628 goto out_qdio; 2629 } 2630 rc = qeth_ulp_setup(card); 2631 if (rc) { 2632 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2633 goto out_qdio; 2634 } 2635 rc = qeth_alloc_qdio_buffers(card); 2636 if (rc) { 2637 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2638 goto out_qdio; 2639 } 2640 rc = qeth_qdio_establish(card); 2641 if (rc) { 2642 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2643 qeth_free_qdio_buffers(card); 2644 goto out_qdio; 2645 } 2646 rc = qeth_qdio_activate(card); 2647 if (rc) { 2648 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2649 goto out_qdio; 2650 } 2651 rc = qeth_dm_act(card); 2652 if (rc) { 2653 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2654 goto out_qdio; 2655 } 2656 2657 return 0; 2658 out_qdio: 2659 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2660 qdio_free(CARD_DDEV(card)); 2661 return rc; 2662 } 2663 2664 void qeth_print_status_message(struct qeth_card *card) 2665 { 2666 switch (card->info.type) { 2667 case QETH_CARD_TYPE_OSD: 2668 case QETH_CARD_TYPE_OSM: 2669 case QETH_CARD_TYPE_OSX: 2670 /* VM will use a non-zero first character 2671 * to indicate a HiperSockets like reporting 2672 * of the level OSA sets the first character to zero 2673 * */ 2674 if (!card->info.mcl_level[0]) { 2675 sprintf(card->info.mcl_level, "%02x%02x", 2676 card->info.mcl_level[2], 2677 card->info.mcl_level[3]); 2678 break; 2679 } 2680 /* fallthrough */ 2681 case QETH_CARD_TYPE_IQD: 2682 if ((card->info.guestlan) || 2683 (card->info.mcl_level[0] & 0x80)) { 2684 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2685 card->info.mcl_level[0]]; 2686 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2687 card->info.mcl_level[1]]; 2688 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2689 card->info.mcl_level[2]]; 2690 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2691 card->info.mcl_level[3]]; 2692 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2693 } 2694 break; 2695 default: 2696 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2697 } 2698 dev_info(&card->gdev->dev, 2699 "Device is a%s card%s%s%s\nwith link type %s.\n", 2700 qeth_get_cardname(card), 2701 (card->info.mcl_level[0]) ? " (level: " : "", 2702 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2703 (card->info.mcl_level[0]) ? ")" : "", 2704 qeth_get_cardname_short(card)); 2705 } 2706 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2707 2708 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2709 { 2710 struct qeth_buffer_pool_entry *entry; 2711 2712 QETH_CARD_TEXT(card, 5, "inwrklst"); 2713 2714 list_for_each_entry(entry, 2715 &card->qdio.init_pool.entry_list, init_list) { 2716 qeth_put_buffer_pool_entry(card, entry); 2717 } 2718 } 2719 2720 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2721 struct qeth_card *card) 2722 { 2723 struct list_head *plh; 2724 struct qeth_buffer_pool_entry *entry; 2725 int i, free; 2726 struct page *page; 2727 2728 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2729 return NULL; 2730 2731 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2732 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2733 free = 1; 2734 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2735 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2736 free = 0; 2737 break; 2738 } 2739 } 2740 if (free) { 2741 list_del_init(&entry->list); 2742 return entry; 2743 } 2744 } 2745 2746 /* no free buffer in pool so take first one and swap pages */ 2747 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2748 struct qeth_buffer_pool_entry, list); 2749 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2750 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2751 page = alloc_page(GFP_ATOMIC); 2752 if (!page) { 2753 return NULL; 2754 } else { 2755 free_page((unsigned long)entry->elements[i]); 2756 entry->elements[i] = page_address(page); 2757 if (card->options.performance_stats) 2758 card->perf_stats.sg_alloc_page_rx++; 2759 } 2760 } 2761 } 2762 list_del_init(&entry->list); 2763 return entry; 2764 } 2765 2766 static int qeth_init_input_buffer(struct qeth_card *card, 2767 struct qeth_qdio_buffer *buf) 2768 { 2769 struct qeth_buffer_pool_entry *pool_entry; 2770 int i; 2771 2772 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2773 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2774 if (!buf->rx_skb) 2775 return 1; 2776 } 2777 2778 pool_entry = qeth_find_free_buffer_pool_entry(card); 2779 if (!pool_entry) 2780 return 1; 2781 2782 /* 2783 * since the buffer is accessed only from the input_tasklet 2784 * there shouldn't be a need to synchronize; also, since we use 2785 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2786 * buffers 2787 */ 2788 2789 buf->pool_entry = pool_entry; 2790 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2791 buf->buffer->element[i].length = PAGE_SIZE; 2792 buf->buffer->element[i].addr = pool_entry->elements[i]; 2793 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2794 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2795 else 2796 buf->buffer->element[i].eflags = 0; 2797 buf->buffer->element[i].sflags = 0; 2798 } 2799 return 0; 2800 } 2801 2802 int qeth_init_qdio_queues(struct qeth_card *card) 2803 { 2804 int i, j; 2805 int rc; 2806 2807 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2808 2809 /* inbound queue */ 2810 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2811 QDIO_MAX_BUFFERS_PER_Q); 2812 qeth_initialize_working_pool_list(card); 2813 /*give only as many buffers to hardware as we have buffer pool entries*/ 2814 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2815 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2816 card->qdio.in_q->next_buf_to_init = 2817 card->qdio.in_buf_pool.buf_count - 1; 2818 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2819 card->qdio.in_buf_pool.buf_count - 1); 2820 if (rc) { 2821 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2822 return rc; 2823 } 2824 2825 /* completion */ 2826 rc = qeth_cq_init(card); 2827 if (rc) { 2828 return rc; 2829 } 2830 2831 /* outbound queue */ 2832 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2833 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2834 QDIO_MAX_BUFFERS_PER_Q); 2835 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2836 qeth_clear_output_buffer(card->qdio.out_qs[i], 2837 card->qdio.out_qs[i]->bufs[j], 2838 QETH_QDIO_BUF_EMPTY); 2839 } 2840 card->qdio.out_qs[i]->card = card; 2841 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2842 card->qdio.out_qs[i]->do_pack = 0; 2843 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2844 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2845 atomic_set(&card->qdio.out_qs[i]->state, 2846 QETH_OUT_Q_UNLOCKED); 2847 } 2848 return 0; 2849 } 2850 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2851 2852 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2853 { 2854 switch (link_type) { 2855 case QETH_LINK_TYPE_HSTR: 2856 return 2; 2857 default: 2858 return 1; 2859 } 2860 } 2861 2862 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2863 struct qeth_ipa_cmd *cmd, __u8 command, 2864 enum qeth_prot_versions prot) 2865 { 2866 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2867 cmd->hdr.command = command; 2868 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2869 cmd->hdr.seqno = card->seqno.ipa; 2870 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2871 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2872 if (card->options.layer2) 2873 cmd->hdr.prim_version_no = 2; 2874 else 2875 cmd->hdr.prim_version_no = 1; 2876 cmd->hdr.param_count = 1; 2877 cmd->hdr.prot_version = prot; 2878 cmd->hdr.ipa_supported = 0; 2879 cmd->hdr.ipa_enabled = 0; 2880 } 2881 2882 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2883 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2884 { 2885 struct qeth_cmd_buffer *iob; 2886 struct qeth_ipa_cmd *cmd; 2887 2888 iob = qeth_get_buffer(&card->write); 2889 if (iob) { 2890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2891 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2892 } else { 2893 dev_warn(&card->gdev->dev, 2894 "The qeth driver ran out of channel command buffers\n"); 2895 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2896 dev_name(&card->gdev->dev)); 2897 } 2898 2899 return iob; 2900 } 2901 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2902 2903 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2904 char prot_type) 2905 { 2906 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2907 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2908 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2909 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2910 } 2911 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2912 2913 /** 2914 * qeth_send_ipa_cmd() - send an IPA command 2915 * 2916 * See qeth_send_control_data() for explanation of the arguments. 2917 */ 2918 2919 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2920 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2921 unsigned long), 2922 void *reply_param) 2923 { 2924 int rc; 2925 char prot_type; 2926 2927 QETH_CARD_TEXT(card, 4, "sendipa"); 2928 2929 if (card->options.layer2) 2930 if (card->info.type == QETH_CARD_TYPE_OSN) 2931 prot_type = QETH_PROT_OSN2; 2932 else 2933 prot_type = QETH_PROT_LAYER2; 2934 else 2935 prot_type = QETH_PROT_TCPIP; 2936 qeth_prepare_ipa_cmd(card, iob, prot_type); 2937 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2938 iob, reply_cb, reply_param); 2939 if (rc == -ETIME) { 2940 qeth_clear_ipacmd_list(card); 2941 qeth_schedule_recovery(card); 2942 } 2943 return rc; 2944 } 2945 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2946 2947 static int qeth_send_startlan(struct qeth_card *card) 2948 { 2949 int rc; 2950 struct qeth_cmd_buffer *iob; 2951 2952 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2953 2954 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2955 if (!iob) 2956 return -ENOMEM; 2957 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2958 return rc; 2959 } 2960 2961 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2962 struct qeth_reply *reply, unsigned long data) 2963 { 2964 struct qeth_ipa_cmd *cmd; 2965 2966 QETH_CARD_TEXT(card, 4, "defadpcb"); 2967 2968 cmd = (struct qeth_ipa_cmd *) data; 2969 if (cmd->hdr.return_code == 0) 2970 cmd->hdr.return_code = 2971 cmd->data.setadapterparms.hdr.return_code; 2972 return 0; 2973 } 2974 2975 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2976 struct qeth_reply *reply, unsigned long data) 2977 { 2978 struct qeth_ipa_cmd *cmd; 2979 2980 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2981 2982 cmd = (struct qeth_ipa_cmd *) data; 2983 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2984 card->info.link_type = 2985 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2986 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2987 } 2988 card->options.adp.supported_funcs = 2989 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2990 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2991 } 2992 2993 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2994 __u32 command, __u32 cmdlen) 2995 { 2996 struct qeth_cmd_buffer *iob; 2997 struct qeth_ipa_cmd *cmd; 2998 2999 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3000 QETH_PROT_IPV4); 3001 if (iob) { 3002 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3003 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3004 cmd->data.setadapterparms.hdr.command_code = command; 3005 cmd->data.setadapterparms.hdr.used_total = 1; 3006 cmd->data.setadapterparms.hdr.seq_no = 1; 3007 } 3008 3009 return iob; 3010 } 3011 3012 int qeth_query_setadapterparms(struct qeth_card *card) 3013 { 3014 int rc; 3015 struct qeth_cmd_buffer *iob; 3016 3017 QETH_CARD_TEXT(card, 3, "queryadp"); 3018 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3019 sizeof(struct qeth_ipacmd_setadpparms)); 3020 if (!iob) 3021 return -ENOMEM; 3022 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3023 return rc; 3024 } 3025 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3026 3027 static int qeth_query_ipassists_cb(struct qeth_card *card, 3028 struct qeth_reply *reply, unsigned long data) 3029 { 3030 struct qeth_ipa_cmd *cmd; 3031 3032 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3033 3034 cmd = (struct qeth_ipa_cmd *) data; 3035 3036 switch (cmd->hdr.return_code) { 3037 case IPA_RC_NOTSUPP: 3038 case IPA_RC_L2_UNSUPPORTED_CMD: 3039 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3040 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3041 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3042 return -0; 3043 default: 3044 if (cmd->hdr.return_code) { 3045 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3046 "rc=%d\n", 3047 dev_name(&card->gdev->dev), 3048 cmd->hdr.return_code); 3049 return 0; 3050 } 3051 } 3052 3053 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3054 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3055 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3056 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3057 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3058 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3059 } else 3060 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3061 "\n", dev_name(&card->gdev->dev)); 3062 return 0; 3063 } 3064 3065 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3066 { 3067 int rc; 3068 struct qeth_cmd_buffer *iob; 3069 3070 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3071 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3072 if (!iob) 3073 return -ENOMEM; 3074 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3075 return rc; 3076 } 3077 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3078 3079 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3080 struct qeth_reply *reply, unsigned long data) 3081 { 3082 struct qeth_ipa_cmd *cmd; 3083 struct qeth_switch_info *sw_info; 3084 struct qeth_query_switch_attributes *attrs; 3085 3086 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3087 cmd = (struct qeth_ipa_cmd *) data; 3088 sw_info = (struct qeth_switch_info *)reply->param; 3089 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3090 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3091 sw_info->capabilities = attrs->capabilities; 3092 sw_info->settings = attrs->settings; 3093 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3094 sw_info->settings); 3095 } 3096 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3097 3098 return 0; 3099 } 3100 3101 int qeth_query_switch_attributes(struct qeth_card *card, 3102 struct qeth_switch_info *sw_info) 3103 { 3104 struct qeth_cmd_buffer *iob; 3105 3106 QETH_CARD_TEXT(card, 2, "qswiattr"); 3107 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3108 return -EOPNOTSUPP; 3109 if (!netif_carrier_ok(card->dev)) 3110 return -ENOMEDIUM; 3111 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3112 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3113 if (!iob) 3114 return -ENOMEM; 3115 return qeth_send_ipa_cmd(card, iob, 3116 qeth_query_switch_attributes_cb, sw_info); 3117 } 3118 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3119 3120 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3121 struct qeth_reply *reply, unsigned long data) 3122 { 3123 struct qeth_ipa_cmd *cmd; 3124 __u16 rc; 3125 3126 cmd = (struct qeth_ipa_cmd *)data; 3127 rc = cmd->hdr.return_code; 3128 if (rc) 3129 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3130 else 3131 card->info.diagass_support = cmd->data.diagass.ext; 3132 return 0; 3133 } 3134 3135 static int qeth_query_setdiagass(struct qeth_card *card) 3136 { 3137 struct qeth_cmd_buffer *iob; 3138 struct qeth_ipa_cmd *cmd; 3139 3140 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3141 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3142 if (!iob) 3143 return -ENOMEM; 3144 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3145 cmd->data.diagass.subcmd_len = 16; 3146 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3147 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3148 } 3149 3150 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3151 { 3152 unsigned long info = get_zeroed_page(GFP_KERNEL); 3153 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3154 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3155 struct ccw_dev_id ccwid; 3156 int level; 3157 3158 tid->chpid = card->info.chpid; 3159 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3160 tid->ssid = ccwid.ssid; 3161 tid->devno = ccwid.devno; 3162 if (!info) 3163 return; 3164 level = stsi(NULL, 0, 0, 0); 3165 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3166 tid->lparnr = info222->lpar_number; 3167 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3168 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3169 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3170 } 3171 free_page(info); 3172 return; 3173 } 3174 3175 static int qeth_hw_trap_cb(struct qeth_card *card, 3176 struct qeth_reply *reply, unsigned long data) 3177 { 3178 struct qeth_ipa_cmd *cmd; 3179 __u16 rc; 3180 3181 cmd = (struct qeth_ipa_cmd *)data; 3182 rc = cmd->hdr.return_code; 3183 if (rc) 3184 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3185 return 0; 3186 } 3187 3188 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3189 { 3190 struct qeth_cmd_buffer *iob; 3191 struct qeth_ipa_cmd *cmd; 3192 3193 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3194 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3195 if (!iob) 3196 return -ENOMEM; 3197 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3198 cmd->data.diagass.subcmd_len = 80; 3199 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3200 cmd->data.diagass.type = 1; 3201 cmd->data.diagass.action = action; 3202 switch (action) { 3203 case QETH_DIAGS_TRAP_ARM: 3204 cmd->data.diagass.options = 0x0003; 3205 cmd->data.diagass.ext = 0x00010000 + 3206 sizeof(struct qeth_trap_id); 3207 qeth_get_trap_id(card, 3208 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3209 break; 3210 case QETH_DIAGS_TRAP_DISARM: 3211 cmd->data.diagass.options = 0x0001; 3212 break; 3213 case QETH_DIAGS_TRAP_CAPTURE: 3214 break; 3215 } 3216 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3217 } 3218 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3219 3220 static int qeth_check_qdio_errors(struct qeth_card *card, 3221 struct qdio_buffer *buf, 3222 unsigned int qdio_error, 3223 const char *dbftext) 3224 { 3225 if (qdio_error) { 3226 QETH_CARD_TEXT(card, 2, dbftext); 3227 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3228 buf->element[15].sflags); 3229 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3230 buf->element[14].sflags); 3231 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3232 if ((buf->element[15].sflags) == 0x12) { 3233 card->stats.rx_dropped++; 3234 return 0; 3235 } else 3236 return 1; 3237 } 3238 return 0; 3239 } 3240 3241 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3242 { 3243 struct qeth_qdio_q *queue = card->qdio.in_q; 3244 struct list_head *lh; 3245 int count; 3246 int i; 3247 int rc; 3248 int newcount = 0; 3249 3250 count = (index < queue->next_buf_to_init)? 3251 card->qdio.in_buf_pool.buf_count - 3252 (queue->next_buf_to_init - index) : 3253 card->qdio.in_buf_pool.buf_count - 3254 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3255 /* only requeue at a certain threshold to avoid SIGAs */ 3256 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3257 for (i = queue->next_buf_to_init; 3258 i < queue->next_buf_to_init + count; ++i) { 3259 if (qeth_init_input_buffer(card, 3260 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3261 break; 3262 } else { 3263 newcount++; 3264 } 3265 } 3266 3267 if (newcount < count) { 3268 /* we are in memory shortage so we switch back to 3269 traditional skb allocation and drop packages */ 3270 atomic_set(&card->force_alloc_skb, 3); 3271 count = newcount; 3272 } else { 3273 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3274 } 3275 3276 if (!count) { 3277 i = 0; 3278 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3279 i++; 3280 if (i == card->qdio.in_buf_pool.buf_count) { 3281 QETH_CARD_TEXT(card, 2, "qsarbw"); 3282 card->reclaim_index = index; 3283 schedule_delayed_work( 3284 &card->buffer_reclaim_work, 3285 QETH_RECLAIM_WORK_TIME); 3286 } 3287 return; 3288 } 3289 3290 /* 3291 * according to old code it should be avoided to requeue all 3292 * 128 buffers in order to benefit from PCI avoidance. 3293 * this function keeps at least one buffer (the buffer at 3294 * 'index') un-requeued -> this buffer is the first buffer that 3295 * will be requeued the next time 3296 */ 3297 if (card->options.performance_stats) { 3298 card->perf_stats.inbound_do_qdio_cnt++; 3299 card->perf_stats.inbound_do_qdio_start_time = 3300 qeth_get_micros(); 3301 } 3302 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3303 queue->next_buf_to_init, count); 3304 if (card->options.performance_stats) 3305 card->perf_stats.inbound_do_qdio_time += 3306 qeth_get_micros() - 3307 card->perf_stats.inbound_do_qdio_start_time; 3308 if (rc) { 3309 QETH_CARD_TEXT(card, 2, "qinberr"); 3310 } 3311 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3312 QDIO_MAX_BUFFERS_PER_Q; 3313 } 3314 } 3315 3316 static void qeth_buffer_reclaim_work(struct work_struct *work) 3317 { 3318 struct qeth_card *card = container_of(work, struct qeth_card, 3319 buffer_reclaim_work.work); 3320 3321 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3322 qeth_queue_input_buffer(card, card->reclaim_index); 3323 } 3324 3325 static void qeth_handle_send_error(struct qeth_card *card, 3326 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3327 { 3328 int sbalf15 = buffer->buffer->element[15].sflags; 3329 3330 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3331 if (card->info.type == QETH_CARD_TYPE_IQD) { 3332 if (sbalf15 == 0) { 3333 qdio_err = 0; 3334 } else { 3335 qdio_err = 1; 3336 } 3337 } 3338 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3339 3340 if (!qdio_err) 3341 return; 3342 3343 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3344 return; 3345 3346 QETH_CARD_TEXT(card, 1, "lnkfail"); 3347 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3348 (u16)qdio_err, (u8)sbalf15); 3349 } 3350 3351 /** 3352 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3353 * @queue: queue to check for packing buffer 3354 * 3355 * Returns number of buffers that were prepared for flush. 3356 */ 3357 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3358 { 3359 struct qeth_qdio_out_buffer *buffer; 3360 3361 buffer = queue->bufs[queue->next_buf_to_fill]; 3362 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3363 (buffer->next_element_to_fill > 0)) { 3364 /* it's a packing buffer */ 3365 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3366 queue->next_buf_to_fill = 3367 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3368 return 1; 3369 } 3370 return 0; 3371 } 3372 3373 /* 3374 * Switched to packing state if the number of used buffers on a queue 3375 * reaches a certain limit. 3376 */ 3377 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3378 { 3379 if (!queue->do_pack) { 3380 if (atomic_read(&queue->used_buffers) 3381 >= QETH_HIGH_WATERMARK_PACK){ 3382 /* switch non-PACKING -> PACKING */ 3383 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3384 if (queue->card->options.performance_stats) 3385 queue->card->perf_stats.sc_dp_p++; 3386 queue->do_pack = 1; 3387 } 3388 } 3389 } 3390 3391 /* 3392 * Switches from packing to non-packing mode. If there is a packing 3393 * buffer on the queue this buffer will be prepared to be flushed. 3394 * In that case 1 is returned to inform the caller. If no buffer 3395 * has to be flushed, zero is returned. 3396 */ 3397 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3398 { 3399 if (queue->do_pack) { 3400 if (atomic_read(&queue->used_buffers) 3401 <= QETH_LOW_WATERMARK_PACK) { 3402 /* switch PACKING -> non-PACKING */ 3403 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3404 if (queue->card->options.performance_stats) 3405 queue->card->perf_stats.sc_p_dp++; 3406 queue->do_pack = 0; 3407 return qeth_prep_flush_pack_buffer(queue); 3408 } 3409 } 3410 return 0; 3411 } 3412 3413 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3414 int count) 3415 { 3416 struct qeth_qdio_out_buffer *buf; 3417 int rc; 3418 int i; 3419 unsigned int qdio_flags; 3420 3421 for (i = index; i < index + count; ++i) { 3422 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3423 buf = queue->bufs[bidx]; 3424 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3425 SBAL_EFLAGS_LAST_ENTRY; 3426 3427 if (queue->bufstates) 3428 queue->bufstates[bidx].user = buf; 3429 3430 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3431 continue; 3432 3433 if (!queue->do_pack) { 3434 if ((atomic_read(&queue->used_buffers) >= 3435 (QETH_HIGH_WATERMARK_PACK - 3436 QETH_WATERMARK_PACK_FUZZ)) && 3437 !atomic_read(&queue->set_pci_flags_count)) { 3438 /* it's likely that we'll go to packing 3439 * mode soon */ 3440 atomic_inc(&queue->set_pci_flags_count); 3441 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3442 } 3443 } else { 3444 if (!atomic_read(&queue->set_pci_flags_count)) { 3445 /* 3446 * there's no outstanding PCI any more, so we 3447 * have to request a PCI to be sure the the PCI 3448 * will wake at some time in the future then we 3449 * can flush packed buffers that might still be 3450 * hanging around, which can happen if no 3451 * further send was requested by the stack 3452 */ 3453 atomic_inc(&queue->set_pci_flags_count); 3454 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3455 } 3456 } 3457 } 3458 3459 netif_trans_update(queue->card->dev); 3460 if (queue->card->options.performance_stats) { 3461 queue->card->perf_stats.outbound_do_qdio_cnt++; 3462 queue->card->perf_stats.outbound_do_qdio_start_time = 3463 qeth_get_micros(); 3464 } 3465 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3466 if (atomic_read(&queue->set_pci_flags_count)) 3467 qdio_flags |= QDIO_FLAG_PCI_OUT; 3468 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3469 queue->queue_no, index, count); 3470 if (queue->card->options.performance_stats) 3471 queue->card->perf_stats.outbound_do_qdio_time += 3472 qeth_get_micros() - 3473 queue->card->perf_stats.outbound_do_qdio_start_time; 3474 atomic_add(count, &queue->used_buffers); 3475 if (rc) { 3476 queue->card->stats.tx_errors += count; 3477 /* ignore temporary SIGA errors without busy condition */ 3478 if (rc == -ENOBUFS) 3479 return; 3480 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3481 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3482 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3483 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3484 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3485 3486 /* this must not happen under normal circumstances. if it 3487 * happens something is really wrong -> recover */ 3488 qeth_schedule_recovery(queue->card); 3489 return; 3490 } 3491 if (queue->card->options.performance_stats) 3492 queue->card->perf_stats.bufs_sent += count; 3493 } 3494 3495 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3496 { 3497 int index; 3498 int flush_cnt = 0; 3499 int q_was_packing = 0; 3500 3501 /* 3502 * check if weed have to switch to non-packing mode or if 3503 * we have to get a pci flag out on the queue 3504 */ 3505 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3506 !atomic_read(&queue->set_pci_flags_count)) { 3507 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3508 QETH_OUT_Q_UNLOCKED) { 3509 /* 3510 * If we get in here, there was no action in 3511 * do_send_packet. So, we check if there is a 3512 * packing buffer to be flushed here. 3513 */ 3514 netif_stop_queue(queue->card->dev); 3515 index = queue->next_buf_to_fill; 3516 q_was_packing = queue->do_pack; 3517 /* queue->do_pack may change */ 3518 barrier(); 3519 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3520 if (!flush_cnt && 3521 !atomic_read(&queue->set_pci_flags_count)) 3522 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3523 if (queue->card->options.performance_stats && 3524 q_was_packing) 3525 queue->card->perf_stats.bufs_sent_pack += 3526 flush_cnt; 3527 if (flush_cnt) 3528 qeth_flush_buffers(queue, index, flush_cnt); 3529 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3530 } 3531 } 3532 } 3533 3534 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3535 unsigned long card_ptr) 3536 { 3537 struct qeth_card *card = (struct qeth_card *)card_ptr; 3538 3539 if (card->dev && (card->dev->flags & IFF_UP)) 3540 napi_schedule(&card->napi); 3541 } 3542 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3543 3544 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3545 { 3546 int rc; 3547 3548 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3549 rc = -1; 3550 goto out; 3551 } else { 3552 if (card->options.cq == cq) { 3553 rc = 0; 3554 goto out; 3555 } 3556 3557 if (card->state != CARD_STATE_DOWN && 3558 card->state != CARD_STATE_RECOVER) { 3559 rc = -1; 3560 goto out; 3561 } 3562 3563 qeth_free_qdio_buffers(card); 3564 card->options.cq = cq; 3565 rc = 0; 3566 } 3567 out: 3568 return rc; 3569 3570 } 3571 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3572 3573 3574 static void qeth_qdio_cq_handler(struct qeth_card *card, 3575 unsigned int qdio_err, 3576 unsigned int queue, int first_element, int count) { 3577 struct qeth_qdio_q *cq = card->qdio.c_q; 3578 int i; 3579 int rc; 3580 3581 if (!qeth_is_cq(card, queue)) 3582 goto out; 3583 3584 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3585 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3586 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3587 3588 if (qdio_err) { 3589 netif_stop_queue(card->dev); 3590 qeth_schedule_recovery(card); 3591 goto out; 3592 } 3593 3594 if (card->options.performance_stats) { 3595 card->perf_stats.cq_cnt++; 3596 card->perf_stats.cq_start_time = qeth_get_micros(); 3597 } 3598 3599 for (i = first_element; i < first_element + count; ++i) { 3600 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3601 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3602 int e; 3603 3604 e = 0; 3605 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3606 buffer->element[e].addr) { 3607 unsigned long phys_aob_addr; 3608 3609 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3610 qeth_qdio_handle_aob(card, phys_aob_addr); 3611 buffer->element[e].addr = NULL; 3612 buffer->element[e].eflags = 0; 3613 buffer->element[e].sflags = 0; 3614 buffer->element[e].length = 0; 3615 3616 ++e; 3617 } 3618 3619 buffer->element[15].eflags = 0; 3620 buffer->element[15].sflags = 0; 3621 } 3622 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3623 card->qdio.c_q->next_buf_to_init, 3624 count); 3625 if (rc) { 3626 dev_warn(&card->gdev->dev, 3627 "QDIO reported an error, rc=%i\n", rc); 3628 QETH_CARD_TEXT(card, 2, "qcqherr"); 3629 } 3630 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3631 + count) % QDIO_MAX_BUFFERS_PER_Q; 3632 3633 netif_wake_queue(card->dev); 3634 3635 if (card->options.performance_stats) { 3636 int delta_t = qeth_get_micros(); 3637 delta_t -= card->perf_stats.cq_start_time; 3638 card->perf_stats.cq_time += delta_t; 3639 } 3640 out: 3641 return; 3642 } 3643 3644 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3645 unsigned int queue, int first_elem, int count, 3646 unsigned long card_ptr) 3647 { 3648 struct qeth_card *card = (struct qeth_card *)card_ptr; 3649 3650 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3651 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3652 3653 if (qeth_is_cq(card, queue)) 3654 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3655 else if (qdio_err) 3656 qeth_schedule_recovery(card); 3657 3658 3659 } 3660 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3661 3662 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3663 unsigned int qdio_error, int __queue, int first_element, 3664 int count, unsigned long card_ptr) 3665 { 3666 struct qeth_card *card = (struct qeth_card *) card_ptr; 3667 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3668 struct qeth_qdio_out_buffer *buffer; 3669 int i; 3670 3671 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3672 if (qdio_error & QDIO_ERROR_FATAL) { 3673 QETH_CARD_TEXT(card, 2, "achkcond"); 3674 netif_stop_queue(card->dev); 3675 qeth_schedule_recovery(card); 3676 return; 3677 } 3678 if (card->options.performance_stats) { 3679 card->perf_stats.outbound_handler_cnt++; 3680 card->perf_stats.outbound_handler_start_time = 3681 qeth_get_micros(); 3682 } 3683 for (i = first_element; i < (first_element + count); ++i) { 3684 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3685 buffer = queue->bufs[bidx]; 3686 qeth_handle_send_error(card, buffer, qdio_error); 3687 3688 if (queue->bufstates && 3689 (queue->bufstates[bidx].flags & 3690 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3691 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3692 3693 if (atomic_cmpxchg(&buffer->state, 3694 QETH_QDIO_BUF_PRIMED, 3695 QETH_QDIO_BUF_PENDING) == 3696 QETH_QDIO_BUF_PRIMED) { 3697 qeth_notify_skbs(queue, buffer, 3698 TX_NOTIFY_PENDING); 3699 } 3700 buffer->aob = queue->bufstates[bidx].aob; 3701 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3702 QETH_CARD_TEXT(queue->card, 5, "aob"); 3703 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3704 virt_to_phys(buffer->aob)); 3705 if (qeth_init_qdio_out_buf(queue, bidx)) { 3706 QETH_CARD_TEXT(card, 2, "outofbuf"); 3707 qeth_schedule_recovery(card); 3708 } 3709 } else { 3710 if (card->options.cq == QETH_CQ_ENABLED) { 3711 enum iucv_tx_notify n; 3712 3713 n = qeth_compute_cq_notification( 3714 buffer->buffer->element[15].sflags, 0); 3715 qeth_notify_skbs(queue, buffer, n); 3716 } 3717 3718 qeth_clear_output_buffer(queue, buffer, 3719 QETH_QDIO_BUF_EMPTY); 3720 } 3721 qeth_cleanup_handled_pending(queue, bidx, 0); 3722 } 3723 atomic_sub(count, &queue->used_buffers); 3724 /* check if we need to do something on this outbound queue */ 3725 if (card->info.type != QETH_CARD_TYPE_IQD) 3726 qeth_check_outbound_queue(queue); 3727 3728 netif_wake_queue(queue->card->dev); 3729 if (card->options.performance_stats) 3730 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3731 card->perf_stats.outbound_handler_start_time; 3732 } 3733 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3734 3735 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3736 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3737 { 3738 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3739 return 2; 3740 return queue_num; 3741 } 3742 3743 /** 3744 * Note: Function assumes that we have 4 outbound queues. 3745 */ 3746 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3747 int ipv, int cast_type) 3748 { 3749 __be16 *tci; 3750 u8 tos; 3751 3752 if (cast_type && card->info.is_multicast_different) 3753 return card->info.is_multicast_different & 3754 (card->qdio.no_out_queues - 1); 3755 3756 switch (card->qdio.do_prio_queueing) { 3757 case QETH_PRIO_Q_ING_TOS: 3758 case QETH_PRIO_Q_ING_PREC: 3759 switch (ipv) { 3760 case 4: 3761 tos = ipv4_get_dsfield(ip_hdr(skb)); 3762 break; 3763 case 6: 3764 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3765 break; 3766 default: 3767 return card->qdio.default_out_queue; 3768 } 3769 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3770 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3771 if (tos & IPTOS_MINCOST) 3772 return qeth_cut_iqd_prio(card, 3); 3773 if (tos & IPTOS_RELIABILITY) 3774 return 2; 3775 if (tos & IPTOS_THROUGHPUT) 3776 return 1; 3777 if (tos & IPTOS_LOWDELAY) 3778 return 0; 3779 break; 3780 case QETH_PRIO_Q_ING_SKB: 3781 if (skb->priority > 5) 3782 return 0; 3783 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3784 case QETH_PRIO_Q_ING_VLAN: 3785 tci = &((struct ethhdr *)skb->data)->h_proto; 3786 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3787 return qeth_cut_iqd_prio(card, 3788 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3789 break; 3790 default: 3791 break; 3792 } 3793 return card->qdio.default_out_queue; 3794 } 3795 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3796 3797 /** 3798 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3799 * @skb: SKB address 3800 * 3801 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3802 * fragmented part of the SKB. Returns zero for linear SKB. 3803 */ 3804 int qeth_get_elements_for_frags(struct sk_buff *skb) 3805 { 3806 int cnt, elements = 0; 3807 3808 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3809 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3810 3811 elements += qeth_get_elements_for_range( 3812 (addr_t)skb_frag_address(frag), 3813 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3814 } 3815 return elements; 3816 } 3817 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3818 3819 /** 3820 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3821 * @card: qeth card structure, to check max. elems. 3822 * @skb: SKB address 3823 * @extra_elems: extra elems needed, to check against max. 3824 * @data_offset: range starts at skb->data + data_offset 3825 * 3826 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3827 * skb data, including linear part and fragments. Checks if the result plus 3828 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3829 * Note: extra_elems is not included in the returned result. 3830 */ 3831 int qeth_get_elements_no(struct qeth_card *card, 3832 struct sk_buff *skb, int extra_elems, int data_offset) 3833 { 3834 int elements = qeth_get_elements_for_range( 3835 (addr_t)skb->data + data_offset, 3836 (addr_t)skb->data + skb_headlen(skb)) + 3837 qeth_get_elements_for_frags(skb); 3838 3839 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3840 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3841 "(Number=%d / Length=%d). Discarded.\n", 3842 elements + extra_elems, skb->len); 3843 return 0; 3844 } 3845 return elements; 3846 } 3847 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3848 3849 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3850 { 3851 int hroom, inpage, rest; 3852 3853 if (((unsigned long)skb->data & PAGE_MASK) != 3854 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3855 hroom = skb_headroom(skb); 3856 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3857 rest = len - inpage; 3858 if (rest > hroom) 3859 return 1; 3860 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3861 skb->data -= rest; 3862 skb->tail -= rest; 3863 *hdr = (struct qeth_hdr *)skb->data; 3864 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3865 } 3866 return 0; 3867 } 3868 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3869 3870 /** 3871 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3872 * @skb: skb that the qeth_hdr should be pushed onto. 3873 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3874 * it contains a valid pointer to a qeth_hdr. 3875 * @len: length of the hdr that needs to be pushed on. 3876 * 3877 * Returns the pushed length. If the header can't be pushed on 3878 * (eg. because it would cross a page boundary), it is allocated from 3879 * the cache instead and 0 is returned. 3880 * Error to create the hdr is indicated by returning with < 0. 3881 */ 3882 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3883 { 3884 if (skb_headroom(skb) >= len && 3885 qeth_get_elements_for_range((addr_t)skb->data - len, 3886 (addr_t)skb->data) == 1) { 3887 *hdr = skb_push(skb, len); 3888 return len; 3889 } 3890 /* fall back */ 3891 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3892 if (!*hdr) 3893 return -ENOMEM; 3894 return 0; 3895 } 3896 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3897 3898 static void __qeth_fill_buffer(struct sk_buff *skb, 3899 struct qeth_qdio_out_buffer *buf, 3900 bool is_first_elem, unsigned int offset) 3901 { 3902 struct qdio_buffer *buffer = buf->buffer; 3903 int element = buf->next_element_to_fill; 3904 int length = skb_headlen(skb) - offset; 3905 char *data = skb->data + offset; 3906 int length_here, cnt; 3907 3908 /* map linear part into buffer element(s) */ 3909 while (length > 0) { 3910 /* length_here is the remaining amount of data in this page */ 3911 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3912 if (length < length_here) 3913 length_here = length; 3914 3915 buffer->element[element].addr = data; 3916 buffer->element[element].length = length_here; 3917 length -= length_here; 3918 if (is_first_elem) { 3919 is_first_elem = false; 3920 if (length || skb_is_nonlinear(skb)) 3921 /* skb needs additional elements */ 3922 buffer->element[element].eflags = 3923 SBAL_EFLAGS_FIRST_FRAG; 3924 else 3925 buffer->element[element].eflags = 0; 3926 } else { 3927 buffer->element[element].eflags = 3928 SBAL_EFLAGS_MIDDLE_FRAG; 3929 } 3930 data += length_here; 3931 element++; 3932 } 3933 3934 /* map page frags into buffer element(s) */ 3935 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3936 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3937 3938 data = skb_frag_address(frag); 3939 length = skb_frag_size(frag); 3940 while (length > 0) { 3941 length_here = PAGE_SIZE - 3942 ((unsigned long) data % PAGE_SIZE); 3943 if (length < length_here) 3944 length_here = length; 3945 3946 buffer->element[element].addr = data; 3947 buffer->element[element].length = length_here; 3948 buffer->element[element].eflags = 3949 SBAL_EFLAGS_MIDDLE_FRAG; 3950 length -= length_here; 3951 data += length_here; 3952 element++; 3953 } 3954 } 3955 3956 if (buffer->element[element - 1].eflags) 3957 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3958 buf->next_element_to_fill = element; 3959 } 3960 3961 /** 3962 * qeth_fill_buffer() - map skb into an output buffer 3963 * @queue: QDIO queue to submit the buffer on 3964 * @buf: buffer to transport the skb 3965 * @skb: skb to map into the buffer 3966 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3967 * from qeth_core_header_cache. 3968 * @offset: when mapping the skb, start at skb->data + offset 3969 * @hd_len: if > 0, build a dedicated header element of this size 3970 */ 3971 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3972 struct qeth_qdio_out_buffer *buf, 3973 struct sk_buff *skb, struct qeth_hdr *hdr, 3974 unsigned int offset, unsigned int hd_len) 3975 { 3976 struct qdio_buffer *buffer = buf->buffer; 3977 bool is_first_elem = true; 3978 int flush_cnt = 0; 3979 3980 refcount_inc(&skb->users); 3981 skb_queue_tail(&buf->skb_list, skb); 3982 3983 /* build dedicated header element */ 3984 if (hd_len) { 3985 int element = buf->next_element_to_fill; 3986 is_first_elem = false; 3987 3988 buffer->element[element].addr = hdr; 3989 buffer->element[element].length = hd_len; 3990 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3991 /* remember to free cache-allocated qeth_hdr: */ 3992 buf->is_header[element] = ((void *)hdr != skb->data); 3993 buf->next_element_to_fill++; 3994 } 3995 3996 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3997 3998 if (!queue->do_pack) { 3999 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4000 /* set state to PRIMED -> will be flushed */ 4001 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4002 flush_cnt = 1; 4003 } else { 4004 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4005 if (queue->card->options.performance_stats) 4006 queue->card->perf_stats.skbs_sent_pack++; 4007 if (buf->next_element_to_fill >= 4008 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4009 /* 4010 * packed buffer if full -> set state PRIMED 4011 * -> will be flushed 4012 */ 4013 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4014 flush_cnt = 1; 4015 } 4016 } 4017 return flush_cnt; 4018 } 4019 4020 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4021 struct qeth_hdr *hdr, unsigned int offset, 4022 unsigned int hd_len) 4023 { 4024 int index = queue->next_buf_to_fill; 4025 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4026 4027 /* 4028 * check if buffer is empty to make sure that we do not 'overtake' 4029 * ourselves and try to fill a buffer that is already primed 4030 */ 4031 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4032 return -EBUSY; 4033 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4034 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4035 qeth_flush_buffers(queue, index, 1); 4036 return 0; 4037 } 4038 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4039 4040 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4041 struct sk_buff *skb, struct qeth_hdr *hdr, 4042 unsigned int offset, unsigned int hd_len, 4043 int elements_needed) 4044 { 4045 struct qeth_qdio_out_buffer *buffer; 4046 int start_index; 4047 int flush_count = 0; 4048 int do_pack = 0; 4049 int tmp; 4050 int rc = 0; 4051 4052 /* spin until we get the queue ... */ 4053 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4054 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4055 start_index = queue->next_buf_to_fill; 4056 buffer = queue->bufs[queue->next_buf_to_fill]; 4057 /* 4058 * check if buffer is empty to make sure that we do not 'overtake' 4059 * ourselves and try to fill a buffer that is already primed 4060 */ 4061 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4062 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4063 return -EBUSY; 4064 } 4065 /* check if we need to switch packing state of this queue */ 4066 qeth_switch_to_packing_if_needed(queue); 4067 if (queue->do_pack) { 4068 do_pack = 1; 4069 /* does packet fit in current buffer? */ 4070 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4071 buffer->next_element_to_fill) < elements_needed) { 4072 /* ... no -> set state PRIMED */ 4073 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4074 flush_count++; 4075 queue->next_buf_to_fill = 4076 (queue->next_buf_to_fill + 1) % 4077 QDIO_MAX_BUFFERS_PER_Q; 4078 buffer = queue->bufs[queue->next_buf_to_fill]; 4079 /* we did a step forward, so check buffer state 4080 * again */ 4081 if (atomic_read(&buffer->state) != 4082 QETH_QDIO_BUF_EMPTY) { 4083 qeth_flush_buffers(queue, start_index, 4084 flush_count); 4085 atomic_set(&queue->state, 4086 QETH_OUT_Q_UNLOCKED); 4087 rc = -EBUSY; 4088 goto out; 4089 } 4090 } 4091 } 4092 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4093 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4094 QDIO_MAX_BUFFERS_PER_Q; 4095 flush_count += tmp; 4096 if (flush_count) 4097 qeth_flush_buffers(queue, start_index, flush_count); 4098 else if (!atomic_read(&queue->set_pci_flags_count)) 4099 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4100 /* 4101 * queue->state will go from LOCKED -> UNLOCKED or from 4102 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4103 * (switch packing state or flush buffer to get another pci flag out). 4104 * In that case we will enter this loop 4105 */ 4106 while (atomic_dec_return(&queue->state)) { 4107 start_index = queue->next_buf_to_fill; 4108 /* check if we can go back to non-packing state */ 4109 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4110 /* 4111 * check if we need to flush a packing buffer to get a pci 4112 * flag out on the queue 4113 */ 4114 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4115 tmp = qeth_prep_flush_pack_buffer(queue); 4116 if (tmp) { 4117 qeth_flush_buffers(queue, start_index, tmp); 4118 flush_count += tmp; 4119 } 4120 } 4121 out: 4122 /* at this point the queue is UNLOCKED again */ 4123 if (queue->card->options.performance_stats && do_pack) 4124 queue->card->perf_stats.bufs_sent_pack += flush_count; 4125 4126 return rc; 4127 } 4128 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4129 4130 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4131 struct qeth_reply *reply, unsigned long data) 4132 { 4133 struct qeth_ipa_cmd *cmd; 4134 struct qeth_ipacmd_setadpparms *setparms; 4135 4136 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4137 4138 cmd = (struct qeth_ipa_cmd *) data; 4139 setparms = &(cmd->data.setadapterparms); 4140 4141 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4142 if (cmd->hdr.return_code) { 4143 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4144 setparms->data.mode = SET_PROMISC_MODE_OFF; 4145 } 4146 card->info.promisc_mode = setparms->data.mode; 4147 return 0; 4148 } 4149 4150 void qeth_setadp_promisc_mode(struct qeth_card *card) 4151 { 4152 enum qeth_ipa_promisc_modes mode; 4153 struct net_device *dev = card->dev; 4154 struct qeth_cmd_buffer *iob; 4155 struct qeth_ipa_cmd *cmd; 4156 4157 QETH_CARD_TEXT(card, 4, "setprom"); 4158 4159 if (((dev->flags & IFF_PROMISC) && 4160 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4161 (!(dev->flags & IFF_PROMISC) && 4162 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4163 return; 4164 mode = SET_PROMISC_MODE_OFF; 4165 if (dev->flags & IFF_PROMISC) 4166 mode = SET_PROMISC_MODE_ON; 4167 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4168 4169 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4170 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4171 if (!iob) 4172 return; 4173 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4174 cmd->data.setadapterparms.data.mode = mode; 4175 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4176 } 4177 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4178 4179 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4180 { 4181 struct qeth_card *card; 4182 char dbf_text[15]; 4183 4184 card = dev->ml_priv; 4185 4186 QETH_CARD_TEXT(card, 4, "chgmtu"); 4187 sprintf(dbf_text, "%8x", new_mtu); 4188 QETH_CARD_TEXT(card, 4, dbf_text); 4189 4190 if (!qeth_mtu_is_valid(card, new_mtu)) 4191 return -EINVAL; 4192 dev->mtu = new_mtu; 4193 return 0; 4194 } 4195 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4196 4197 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4198 { 4199 struct qeth_card *card; 4200 4201 card = dev->ml_priv; 4202 4203 QETH_CARD_TEXT(card, 5, "getstat"); 4204 4205 return &card->stats; 4206 } 4207 EXPORT_SYMBOL_GPL(qeth_get_stats); 4208 4209 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4210 struct qeth_reply *reply, unsigned long data) 4211 { 4212 struct qeth_ipa_cmd *cmd; 4213 4214 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4215 4216 cmd = (struct qeth_ipa_cmd *) data; 4217 if (!card->options.layer2 || 4218 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4219 ether_addr_copy(card->dev->dev_addr, 4220 cmd->data.setadapterparms.data.change_addr.addr); 4221 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4222 } 4223 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4224 return 0; 4225 } 4226 4227 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4228 { 4229 int rc; 4230 struct qeth_cmd_buffer *iob; 4231 struct qeth_ipa_cmd *cmd; 4232 4233 QETH_CARD_TEXT(card, 4, "chgmac"); 4234 4235 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4236 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4237 sizeof(struct qeth_change_addr)); 4238 if (!iob) 4239 return -ENOMEM; 4240 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4241 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4242 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4243 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4244 card->dev->dev_addr); 4245 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4246 NULL); 4247 return rc; 4248 } 4249 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4250 4251 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4252 struct qeth_reply *reply, unsigned long data) 4253 { 4254 struct qeth_ipa_cmd *cmd; 4255 struct qeth_set_access_ctrl *access_ctrl_req; 4256 int fallback = *(int *)reply->param; 4257 4258 QETH_CARD_TEXT(card, 4, "setaccb"); 4259 4260 cmd = (struct qeth_ipa_cmd *) data; 4261 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4262 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4263 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4264 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4265 cmd->data.setadapterparms.hdr.return_code); 4266 if (cmd->data.setadapterparms.hdr.return_code != 4267 SET_ACCESS_CTRL_RC_SUCCESS) 4268 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4269 card->gdev->dev.kobj.name, 4270 access_ctrl_req->subcmd_code, 4271 cmd->data.setadapterparms.hdr.return_code); 4272 switch (cmd->data.setadapterparms.hdr.return_code) { 4273 case SET_ACCESS_CTRL_RC_SUCCESS: 4274 if (card->options.isolation == ISOLATION_MODE_NONE) { 4275 dev_info(&card->gdev->dev, 4276 "QDIO data connection isolation is deactivated\n"); 4277 } else { 4278 dev_info(&card->gdev->dev, 4279 "QDIO data connection isolation is activated\n"); 4280 } 4281 break; 4282 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4283 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4284 "deactivated\n", dev_name(&card->gdev->dev)); 4285 if (fallback) 4286 card->options.isolation = card->options.prev_isolation; 4287 break; 4288 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4289 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4290 " activated\n", dev_name(&card->gdev->dev)); 4291 if (fallback) 4292 card->options.isolation = card->options.prev_isolation; 4293 break; 4294 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4295 dev_err(&card->gdev->dev, "Adapter does not " 4296 "support QDIO data connection isolation\n"); 4297 break; 4298 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4299 dev_err(&card->gdev->dev, 4300 "Adapter is dedicated. " 4301 "QDIO data connection isolation not supported\n"); 4302 if (fallback) 4303 card->options.isolation = card->options.prev_isolation; 4304 break; 4305 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4306 dev_err(&card->gdev->dev, 4307 "TSO does not permit QDIO data connection isolation\n"); 4308 if (fallback) 4309 card->options.isolation = card->options.prev_isolation; 4310 break; 4311 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4312 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4313 "support reflective relay mode\n"); 4314 if (fallback) 4315 card->options.isolation = card->options.prev_isolation; 4316 break; 4317 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4318 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4319 "enabled at the adjacent switch port"); 4320 if (fallback) 4321 card->options.isolation = card->options.prev_isolation; 4322 break; 4323 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4324 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4325 "at the adjacent switch failed\n"); 4326 break; 4327 default: 4328 /* this should never happen */ 4329 if (fallback) 4330 card->options.isolation = card->options.prev_isolation; 4331 break; 4332 } 4333 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4334 return 0; 4335 } 4336 4337 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4338 enum qeth_ipa_isolation_modes isolation, int fallback) 4339 { 4340 int rc; 4341 struct qeth_cmd_buffer *iob; 4342 struct qeth_ipa_cmd *cmd; 4343 struct qeth_set_access_ctrl *access_ctrl_req; 4344 4345 QETH_CARD_TEXT(card, 4, "setacctl"); 4346 4347 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4348 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4349 4350 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4351 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4352 sizeof(struct qeth_set_access_ctrl)); 4353 if (!iob) 4354 return -ENOMEM; 4355 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4356 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4357 access_ctrl_req->subcmd_code = isolation; 4358 4359 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4360 &fallback); 4361 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4362 return rc; 4363 } 4364 4365 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4366 { 4367 int rc = 0; 4368 4369 QETH_CARD_TEXT(card, 4, "setactlo"); 4370 4371 if ((card->info.type == QETH_CARD_TYPE_OSD || 4372 card->info.type == QETH_CARD_TYPE_OSX) && 4373 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4374 rc = qeth_setadpparms_set_access_ctrl(card, 4375 card->options.isolation, fallback); 4376 if (rc) { 4377 QETH_DBF_MESSAGE(3, 4378 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4379 card->gdev->dev.kobj.name, 4380 rc); 4381 rc = -EOPNOTSUPP; 4382 } 4383 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4384 card->options.isolation = ISOLATION_MODE_NONE; 4385 4386 dev_err(&card->gdev->dev, "Adapter does not " 4387 "support QDIO data connection isolation\n"); 4388 rc = -EOPNOTSUPP; 4389 } 4390 return rc; 4391 } 4392 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4393 4394 void qeth_tx_timeout(struct net_device *dev) 4395 { 4396 struct qeth_card *card; 4397 4398 card = dev->ml_priv; 4399 QETH_CARD_TEXT(card, 4, "txtimeo"); 4400 card->stats.tx_errors++; 4401 qeth_schedule_recovery(card); 4402 } 4403 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4404 4405 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4406 { 4407 struct qeth_card *card = dev->ml_priv; 4408 int rc = 0; 4409 4410 switch (regnum) { 4411 case MII_BMCR: /* Basic mode control register */ 4412 rc = BMCR_FULLDPLX; 4413 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4414 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4415 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4416 rc |= BMCR_SPEED100; 4417 break; 4418 case MII_BMSR: /* Basic mode status register */ 4419 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4420 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4421 BMSR_100BASE4; 4422 break; 4423 case MII_PHYSID1: /* PHYS ID 1 */ 4424 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4425 dev->dev_addr[2]; 4426 rc = (rc >> 5) & 0xFFFF; 4427 break; 4428 case MII_PHYSID2: /* PHYS ID 2 */ 4429 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4430 break; 4431 case MII_ADVERTISE: /* Advertisement control reg */ 4432 rc = ADVERTISE_ALL; 4433 break; 4434 case MII_LPA: /* Link partner ability reg */ 4435 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4436 LPA_100BASE4 | LPA_LPACK; 4437 break; 4438 case MII_EXPANSION: /* Expansion register */ 4439 break; 4440 case MII_DCOUNTER: /* disconnect counter */ 4441 break; 4442 case MII_FCSCOUNTER: /* false carrier counter */ 4443 break; 4444 case MII_NWAYTEST: /* N-way auto-neg test register */ 4445 break; 4446 case MII_RERRCOUNTER: /* rx error counter */ 4447 rc = card->stats.rx_errors; 4448 break; 4449 case MII_SREVISION: /* silicon revision */ 4450 break; 4451 case MII_RESV1: /* reserved 1 */ 4452 break; 4453 case MII_LBRERROR: /* loopback, rx, bypass error */ 4454 break; 4455 case MII_PHYADDR: /* physical address */ 4456 break; 4457 case MII_RESV2: /* reserved 2 */ 4458 break; 4459 case MII_TPISTATUS: /* TPI status for 10mbps */ 4460 break; 4461 case MII_NCONFIG: /* network interface config */ 4462 break; 4463 default: 4464 break; 4465 } 4466 return rc; 4467 } 4468 4469 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4470 struct qeth_cmd_buffer *iob, int len, 4471 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4472 unsigned long), 4473 void *reply_param) 4474 { 4475 u16 s1, s2; 4476 4477 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4478 4479 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4480 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4481 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4482 /* adjust PDU length fields in IPA_PDU_HEADER */ 4483 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4484 s2 = (u32) len; 4485 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4486 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4487 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4488 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4489 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4490 reply_cb, reply_param); 4491 } 4492 4493 static int qeth_snmp_command_cb(struct qeth_card *card, 4494 struct qeth_reply *reply, unsigned long sdata) 4495 { 4496 struct qeth_ipa_cmd *cmd; 4497 struct qeth_arp_query_info *qinfo; 4498 struct qeth_snmp_cmd *snmp; 4499 unsigned char *data; 4500 __u16 data_len; 4501 4502 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4503 4504 cmd = (struct qeth_ipa_cmd *) sdata; 4505 data = (unsigned char *)((char *)cmd - reply->offset); 4506 qinfo = (struct qeth_arp_query_info *) reply->param; 4507 snmp = &cmd->data.setadapterparms.data.snmp; 4508 4509 if (cmd->hdr.return_code) { 4510 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4511 return 0; 4512 } 4513 if (cmd->data.setadapterparms.hdr.return_code) { 4514 cmd->hdr.return_code = 4515 cmd->data.setadapterparms.hdr.return_code; 4516 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4517 return 0; 4518 } 4519 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4520 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4521 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4522 else 4523 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4524 4525 /* check if there is enough room in userspace */ 4526 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4527 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4528 cmd->hdr.return_code = IPA_RC_ENOMEM; 4529 return 0; 4530 } 4531 QETH_CARD_TEXT_(card, 4, "snore%i", 4532 cmd->data.setadapterparms.hdr.used_total); 4533 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4534 cmd->data.setadapterparms.hdr.seq_no); 4535 /*copy entries to user buffer*/ 4536 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4537 memcpy(qinfo->udata + qinfo->udata_offset, 4538 (char *)snmp, 4539 data_len + offsetof(struct qeth_snmp_cmd, data)); 4540 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4541 } else { 4542 memcpy(qinfo->udata + qinfo->udata_offset, 4543 (char *)&snmp->request, data_len); 4544 } 4545 qinfo->udata_offset += data_len; 4546 /* check if all replies received ... */ 4547 QETH_CARD_TEXT_(card, 4, "srtot%i", 4548 cmd->data.setadapterparms.hdr.used_total); 4549 QETH_CARD_TEXT_(card, 4, "srseq%i", 4550 cmd->data.setadapterparms.hdr.seq_no); 4551 if (cmd->data.setadapterparms.hdr.seq_no < 4552 cmd->data.setadapterparms.hdr.used_total) 4553 return 1; 4554 return 0; 4555 } 4556 4557 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4558 { 4559 struct qeth_cmd_buffer *iob; 4560 struct qeth_ipa_cmd *cmd; 4561 struct qeth_snmp_ureq *ureq; 4562 unsigned int req_len; 4563 struct qeth_arp_query_info qinfo = {0, }; 4564 int rc = 0; 4565 4566 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4567 4568 if (card->info.guestlan) 4569 return -EOPNOTSUPP; 4570 4571 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4572 (!card->options.layer2)) { 4573 return -EOPNOTSUPP; 4574 } 4575 /* skip 4 bytes (data_len struct member) to get req_len */ 4576 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4577 return -EFAULT; 4578 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4579 sizeof(struct qeth_ipacmd_hdr) - 4580 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4581 return -EINVAL; 4582 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4583 if (IS_ERR(ureq)) { 4584 QETH_CARD_TEXT(card, 2, "snmpnome"); 4585 return PTR_ERR(ureq); 4586 } 4587 qinfo.udata_len = ureq->hdr.data_len; 4588 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4589 if (!qinfo.udata) { 4590 kfree(ureq); 4591 return -ENOMEM; 4592 } 4593 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4594 4595 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4596 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4597 if (!iob) { 4598 rc = -ENOMEM; 4599 goto out; 4600 } 4601 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4602 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4603 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4604 qeth_snmp_command_cb, (void *)&qinfo); 4605 if (rc) 4606 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4607 QETH_CARD_IFNAME(card), rc); 4608 else { 4609 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4610 rc = -EFAULT; 4611 } 4612 out: 4613 kfree(ureq); 4614 kfree(qinfo.udata); 4615 return rc; 4616 } 4617 4618 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4619 struct qeth_reply *reply, unsigned long data) 4620 { 4621 struct qeth_ipa_cmd *cmd; 4622 struct qeth_qoat_priv *priv; 4623 char *resdata; 4624 int resdatalen; 4625 4626 QETH_CARD_TEXT(card, 3, "qoatcb"); 4627 4628 cmd = (struct qeth_ipa_cmd *)data; 4629 priv = (struct qeth_qoat_priv *)reply->param; 4630 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4631 resdata = (char *)data + 28; 4632 4633 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4634 cmd->hdr.return_code = IPA_RC_FFFF; 4635 return 0; 4636 } 4637 4638 memcpy((priv->buffer + priv->response_len), resdata, 4639 resdatalen); 4640 priv->response_len += resdatalen; 4641 4642 if (cmd->data.setadapterparms.hdr.seq_no < 4643 cmd->data.setadapterparms.hdr.used_total) 4644 return 1; 4645 return 0; 4646 } 4647 4648 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4649 { 4650 int rc = 0; 4651 struct qeth_cmd_buffer *iob; 4652 struct qeth_ipa_cmd *cmd; 4653 struct qeth_query_oat *oat_req; 4654 struct qeth_query_oat_data oat_data; 4655 struct qeth_qoat_priv priv; 4656 void __user *tmp; 4657 4658 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4659 4660 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4661 rc = -EOPNOTSUPP; 4662 goto out; 4663 } 4664 4665 if (copy_from_user(&oat_data, udata, 4666 sizeof(struct qeth_query_oat_data))) { 4667 rc = -EFAULT; 4668 goto out; 4669 } 4670 4671 priv.buffer_len = oat_data.buffer_len; 4672 priv.response_len = 0; 4673 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4674 if (!priv.buffer) { 4675 rc = -ENOMEM; 4676 goto out; 4677 } 4678 4679 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4680 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4681 sizeof(struct qeth_query_oat)); 4682 if (!iob) { 4683 rc = -ENOMEM; 4684 goto out_free; 4685 } 4686 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4687 oat_req = &cmd->data.setadapterparms.data.query_oat; 4688 oat_req->subcmd_code = oat_data.command; 4689 4690 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4691 &priv); 4692 if (!rc) { 4693 if (is_compat_task()) 4694 tmp = compat_ptr(oat_data.ptr); 4695 else 4696 tmp = (void __user *)(unsigned long)oat_data.ptr; 4697 4698 if (copy_to_user(tmp, priv.buffer, 4699 priv.response_len)) { 4700 rc = -EFAULT; 4701 goto out_free; 4702 } 4703 4704 oat_data.response_len = priv.response_len; 4705 4706 if (copy_to_user(udata, &oat_data, 4707 sizeof(struct qeth_query_oat_data))) 4708 rc = -EFAULT; 4709 } else 4710 if (rc == IPA_RC_FFFF) 4711 rc = -EFAULT; 4712 4713 out_free: 4714 kfree(priv.buffer); 4715 out: 4716 return rc; 4717 } 4718 4719 static int qeth_query_card_info_cb(struct qeth_card *card, 4720 struct qeth_reply *reply, unsigned long data) 4721 { 4722 struct qeth_ipa_cmd *cmd; 4723 struct qeth_query_card_info *card_info; 4724 struct carrier_info *carrier_info; 4725 4726 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4727 carrier_info = (struct carrier_info *)reply->param; 4728 cmd = (struct qeth_ipa_cmd *)data; 4729 card_info = &cmd->data.setadapterparms.data.card_info; 4730 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4731 carrier_info->card_type = card_info->card_type; 4732 carrier_info->port_mode = card_info->port_mode; 4733 carrier_info->port_speed = card_info->port_speed; 4734 } 4735 4736 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4737 return 0; 4738 } 4739 4740 static int qeth_query_card_info(struct qeth_card *card, 4741 struct carrier_info *carrier_info) 4742 { 4743 struct qeth_cmd_buffer *iob; 4744 4745 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4746 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4747 return -EOPNOTSUPP; 4748 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4749 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4750 if (!iob) 4751 return -ENOMEM; 4752 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4753 (void *)carrier_info); 4754 } 4755 4756 /** 4757 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4758 * @card: pointer to a qeth_card 4759 * 4760 * Returns 4761 * 0, if a MAC address has been set for the card's netdevice 4762 * a return code, for various error conditions 4763 */ 4764 int qeth_vm_request_mac(struct qeth_card *card) 4765 { 4766 struct diag26c_mac_resp *response; 4767 struct diag26c_mac_req *request; 4768 struct ccw_dev_id id; 4769 int rc; 4770 4771 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4772 4773 if (!card->dev) 4774 return -ENODEV; 4775 4776 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4777 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4778 if (!request || !response) { 4779 rc = -ENOMEM; 4780 goto out; 4781 } 4782 4783 ccw_device_get_id(CARD_DDEV(card), &id); 4784 request->resp_buf_len = sizeof(*response); 4785 request->resp_version = DIAG26C_VERSION2; 4786 request->op_code = DIAG26C_GET_MAC; 4787 request->devno = id.devno; 4788 4789 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4790 if (rc) 4791 goto out; 4792 4793 if (request->resp_buf_len < sizeof(*response) || 4794 response->version != request->resp_version) { 4795 rc = -EIO; 4796 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4797 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4798 sizeof(request->resp_buf_len)); 4799 } else if (!is_valid_ether_addr(response->mac)) { 4800 rc = -EINVAL; 4801 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4802 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4803 } else { 4804 ether_addr_copy(card->dev->dev_addr, response->mac); 4805 } 4806 4807 out: 4808 kfree(response); 4809 kfree(request); 4810 return rc; 4811 } 4812 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4813 4814 static int qeth_get_qdio_q_format(struct qeth_card *card) 4815 { 4816 if (card->info.type == QETH_CARD_TYPE_IQD) 4817 return QDIO_IQDIO_QFMT; 4818 else 4819 return QDIO_QETH_QFMT; 4820 } 4821 4822 static void qeth_determine_capabilities(struct qeth_card *card) 4823 { 4824 int rc; 4825 int length; 4826 char *prcd; 4827 struct ccw_device *ddev; 4828 int ddev_offline = 0; 4829 4830 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4831 ddev = CARD_DDEV(card); 4832 if (!ddev->online) { 4833 ddev_offline = 1; 4834 rc = ccw_device_set_online(ddev); 4835 if (rc) { 4836 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4837 goto out; 4838 } 4839 } 4840 4841 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4842 if (rc) { 4843 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4844 dev_name(&card->gdev->dev), rc); 4845 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4846 goto out_offline; 4847 } 4848 qeth_configure_unitaddr(card, prcd); 4849 if (ddev_offline) 4850 qeth_configure_blkt_default(card, prcd); 4851 kfree(prcd); 4852 4853 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4854 if (rc) 4855 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4856 4857 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4858 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4859 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4860 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4861 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4862 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4863 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4864 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4865 dev_info(&card->gdev->dev, 4866 "Completion Queueing supported\n"); 4867 } else { 4868 card->options.cq = QETH_CQ_NOTAVAILABLE; 4869 } 4870 4871 4872 out_offline: 4873 if (ddev_offline == 1) 4874 ccw_device_set_offline(ddev); 4875 out: 4876 return; 4877 } 4878 4879 static void qeth_qdio_establish_cq(struct qeth_card *card, 4880 struct qdio_buffer **in_sbal_ptrs, 4881 void (**queue_start_poll) 4882 (struct ccw_device *, int, 4883 unsigned long)) 4884 { 4885 int i; 4886 4887 if (card->options.cq == QETH_CQ_ENABLED) { 4888 int offset = QDIO_MAX_BUFFERS_PER_Q * 4889 (card->qdio.no_in_queues - 1); 4890 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4891 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4892 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4893 } 4894 4895 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4896 } 4897 } 4898 4899 static int qeth_qdio_establish(struct qeth_card *card) 4900 { 4901 struct qdio_initialize init_data; 4902 char *qib_param_field; 4903 struct qdio_buffer **in_sbal_ptrs; 4904 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4905 struct qdio_buffer **out_sbal_ptrs; 4906 int i, j, k; 4907 int rc = 0; 4908 4909 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4910 4911 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4912 GFP_KERNEL); 4913 if (!qib_param_field) { 4914 rc = -ENOMEM; 4915 goto out_free_nothing; 4916 } 4917 4918 qeth_create_qib_param_field(card, qib_param_field); 4919 qeth_create_qib_param_field_blkt(card, qib_param_field); 4920 4921 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4922 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4923 GFP_KERNEL); 4924 if (!in_sbal_ptrs) { 4925 rc = -ENOMEM; 4926 goto out_free_qib_param; 4927 } 4928 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4929 in_sbal_ptrs[i] = (struct qdio_buffer *) 4930 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4931 } 4932 4933 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4934 GFP_KERNEL); 4935 if (!queue_start_poll) { 4936 rc = -ENOMEM; 4937 goto out_free_in_sbals; 4938 } 4939 for (i = 0; i < card->qdio.no_in_queues; ++i) 4940 queue_start_poll[i] = card->discipline->start_poll; 4941 4942 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4943 4944 out_sbal_ptrs = 4945 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4946 sizeof(void *), GFP_KERNEL); 4947 if (!out_sbal_ptrs) { 4948 rc = -ENOMEM; 4949 goto out_free_queue_start_poll; 4950 } 4951 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4952 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4953 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4954 card->qdio.out_qs[i]->bufs[j]->buffer); 4955 } 4956 4957 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4958 init_data.cdev = CARD_DDEV(card); 4959 init_data.q_format = qeth_get_qdio_q_format(card); 4960 init_data.qib_param_field_format = 0; 4961 init_data.qib_param_field = qib_param_field; 4962 init_data.no_input_qs = card->qdio.no_in_queues; 4963 init_data.no_output_qs = card->qdio.no_out_queues; 4964 init_data.input_handler = card->discipline->input_handler; 4965 init_data.output_handler = card->discipline->output_handler; 4966 init_data.queue_start_poll_array = queue_start_poll; 4967 init_data.int_parm = (unsigned long) card; 4968 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4969 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4970 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4971 init_data.scan_threshold = 4972 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4973 4974 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4975 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4976 rc = qdio_allocate(&init_data); 4977 if (rc) { 4978 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4979 goto out; 4980 } 4981 rc = qdio_establish(&init_data); 4982 if (rc) { 4983 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4984 qdio_free(CARD_DDEV(card)); 4985 } 4986 } 4987 4988 switch (card->options.cq) { 4989 case QETH_CQ_ENABLED: 4990 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4991 break; 4992 case QETH_CQ_DISABLED: 4993 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4994 break; 4995 default: 4996 break; 4997 } 4998 out: 4999 kfree(out_sbal_ptrs); 5000 out_free_queue_start_poll: 5001 kfree(queue_start_poll); 5002 out_free_in_sbals: 5003 kfree(in_sbal_ptrs); 5004 out_free_qib_param: 5005 kfree(qib_param_field); 5006 out_free_nothing: 5007 return rc; 5008 } 5009 5010 static void qeth_core_free_card(struct qeth_card *card) 5011 { 5012 5013 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5014 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5015 qeth_clean_channel(&card->read); 5016 qeth_clean_channel(&card->write); 5017 if (card->dev) 5018 free_netdev(card->dev); 5019 qeth_free_qdio_buffers(card); 5020 unregister_service_level(&card->qeth_service_level); 5021 kfree(card); 5022 } 5023 5024 void qeth_trace_features(struct qeth_card *card) 5025 { 5026 QETH_CARD_TEXT(card, 2, "features"); 5027 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5028 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5029 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5030 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5031 sizeof(card->info.diagass_support)); 5032 } 5033 EXPORT_SYMBOL_GPL(qeth_trace_features); 5034 5035 static struct ccw_device_id qeth_ids[] = { 5036 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5037 .driver_info = QETH_CARD_TYPE_OSD}, 5038 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5039 .driver_info = QETH_CARD_TYPE_IQD}, 5040 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5041 .driver_info = QETH_CARD_TYPE_OSN}, 5042 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5043 .driver_info = QETH_CARD_TYPE_OSM}, 5044 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5045 .driver_info = QETH_CARD_TYPE_OSX}, 5046 {}, 5047 }; 5048 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5049 5050 static struct ccw_driver qeth_ccw_driver = { 5051 .driver = { 5052 .owner = THIS_MODULE, 5053 .name = "qeth", 5054 }, 5055 .ids = qeth_ids, 5056 .probe = ccwgroup_probe_ccwdev, 5057 .remove = ccwgroup_remove_ccwdev, 5058 }; 5059 5060 int qeth_core_hardsetup_card(struct qeth_card *card) 5061 { 5062 int retries = 3; 5063 int rc; 5064 5065 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5066 atomic_set(&card->force_alloc_skb, 0); 5067 qeth_update_from_chp_desc(card); 5068 retry: 5069 if (retries < 3) 5070 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5071 dev_name(&card->gdev->dev)); 5072 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5073 ccw_device_set_offline(CARD_DDEV(card)); 5074 ccw_device_set_offline(CARD_WDEV(card)); 5075 ccw_device_set_offline(CARD_RDEV(card)); 5076 qdio_free(CARD_DDEV(card)); 5077 rc = ccw_device_set_online(CARD_RDEV(card)); 5078 if (rc) 5079 goto retriable; 5080 rc = ccw_device_set_online(CARD_WDEV(card)); 5081 if (rc) 5082 goto retriable; 5083 rc = ccw_device_set_online(CARD_DDEV(card)); 5084 if (rc) 5085 goto retriable; 5086 retriable: 5087 if (rc == -ERESTARTSYS) { 5088 QETH_DBF_TEXT(SETUP, 2, "break1"); 5089 return rc; 5090 } else if (rc) { 5091 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5092 if (--retries < 0) 5093 goto out; 5094 else 5095 goto retry; 5096 } 5097 qeth_determine_capabilities(card); 5098 qeth_init_tokens(card); 5099 qeth_init_func_level(card); 5100 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5101 if (rc == -ERESTARTSYS) { 5102 QETH_DBF_TEXT(SETUP, 2, "break2"); 5103 return rc; 5104 } else if (rc) { 5105 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5106 if (--retries < 0) 5107 goto out; 5108 else 5109 goto retry; 5110 } 5111 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5112 if (rc == -ERESTARTSYS) { 5113 QETH_DBF_TEXT(SETUP, 2, "break3"); 5114 return rc; 5115 } else if (rc) { 5116 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5117 if (--retries < 0) 5118 goto out; 5119 else 5120 goto retry; 5121 } 5122 card->read_or_write_problem = 0; 5123 rc = qeth_mpc_initialize(card); 5124 if (rc) { 5125 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5126 goto out; 5127 } 5128 5129 rc = qeth_send_startlan(card); 5130 if (rc) { 5131 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5132 if (rc == IPA_RC_LAN_OFFLINE) { 5133 dev_warn(&card->gdev->dev, 5134 "The LAN is offline\n"); 5135 card->lan_online = 0; 5136 } else { 5137 rc = -ENODEV; 5138 goto out; 5139 } 5140 } else 5141 card->lan_online = 1; 5142 5143 card->options.ipa4.supported_funcs = 0; 5144 card->options.ipa6.supported_funcs = 0; 5145 card->options.adp.supported_funcs = 0; 5146 card->options.sbp.supported_funcs = 0; 5147 card->info.diagass_support = 0; 5148 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5149 if (rc == -ENOMEM) 5150 goto out; 5151 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5152 rc = qeth_query_setadapterparms(card); 5153 if (rc < 0) { 5154 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5155 goto out; 5156 } 5157 } 5158 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5159 rc = qeth_query_setdiagass(card); 5160 if (rc < 0) { 5161 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5162 goto out; 5163 } 5164 } 5165 return 0; 5166 out: 5167 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5168 "an error on the device\n"); 5169 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5170 dev_name(&card->gdev->dev), rc); 5171 return rc; 5172 } 5173 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5174 5175 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5176 struct sk_buff *skb, int offset, int data_len) 5177 { 5178 struct page *page = virt_to_page(element->addr); 5179 unsigned int next_frag; 5180 5181 /* first fill the linear space */ 5182 if (!skb->len) { 5183 unsigned int linear = min(data_len, skb_tailroom(skb)); 5184 5185 skb_put_data(skb, element->addr + offset, linear); 5186 data_len -= linear; 5187 if (!data_len) 5188 return; 5189 offset += linear; 5190 /* fall through to add page frag for remaining data */ 5191 } 5192 5193 next_frag = skb_shinfo(skb)->nr_frags; 5194 get_page(page); 5195 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5196 } 5197 5198 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5199 { 5200 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5201 } 5202 5203 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5204 struct qeth_qdio_buffer *qethbuffer, 5205 struct qdio_buffer_element **__element, int *__offset, 5206 struct qeth_hdr **hdr) 5207 { 5208 struct qdio_buffer_element *element = *__element; 5209 struct qdio_buffer *buffer = qethbuffer->buffer; 5210 int offset = *__offset; 5211 struct sk_buff *skb; 5212 int skb_len = 0; 5213 void *data_ptr; 5214 int data_len; 5215 int headroom = 0; 5216 int use_rx_sg = 0; 5217 5218 /* qeth_hdr must not cross element boundaries */ 5219 while (element->length < offset + sizeof(struct qeth_hdr)) { 5220 if (qeth_is_last_sbale(element)) 5221 return NULL; 5222 element++; 5223 offset = 0; 5224 } 5225 *hdr = element->addr + offset; 5226 5227 offset += sizeof(struct qeth_hdr); 5228 switch ((*hdr)->hdr.l2.id) { 5229 case QETH_HEADER_TYPE_LAYER2: 5230 skb_len = (*hdr)->hdr.l2.pkt_length; 5231 break; 5232 case QETH_HEADER_TYPE_LAYER3: 5233 skb_len = (*hdr)->hdr.l3.length; 5234 headroom = ETH_HLEN; 5235 break; 5236 case QETH_HEADER_TYPE_OSN: 5237 skb_len = (*hdr)->hdr.osn.pdu_length; 5238 headroom = sizeof(struct qeth_hdr); 5239 break; 5240 default: 5241 break; 5242 } 5243 5244 if (!skb_len) 5245 return NULL; 5246 5247 if (((skb_len >= card->options.rx_sg_cb) && 5248 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5249 (!atomic_read(&card->force_alloc_skb))) || 5250 (card->options.cq == QETH_CQ_ENABLED)) 5251 use_rx_sg = 1; 5252 5253 if (use_rx_sg && qethbuffer->rx_skb) { 5254 /* QETH_CQ_ENABLED only: */ 5255 skb = qethbuffer->rx_skb; 5256 qethbuffer->rx_skb = NULL; 5257 } else { 5258 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5259 5260 skb = dev_alloc_skb(linear + headroom); 5261 } 5262 if (!skb) 5263 goto no_mem; 5264 if (headroom) 5265 skb_reserve(skb, headroom); 5266 5267 data_ptr = element->addr + offset; 5268 while (skb_len) { 5269 data_len = min(skb_len, (int)(element->length - offset)); 5270 if (data_len) { 5271 if (use_rx_sg) 5272 qeth_create_skb_frag(element, skb, offset, 5273 data_len); 5274 else 5275 skb_put_data(skb, data_ptr, data_len); 5276 } 5277 skb_len -= data_len; 5278 if (skb_len) { 5279 if (qeth_is_last_sbale(element)) { 5280 QETH_CARD_TEXT(card, 4, "unexeob"); 5281 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5282 dev_kfree_skb_any(skb); 5283 card->stats.rx_errors++; 5284 return NULL; 5285 } 5286 element++; 5287 offset = 0; 5288 data_ptr = element->addr; 5289 } else { 5290 offset += data_len; 5291 } 5292 } 5293 *__element = element; 5294 *__offset = offset; 5295 if (use_rx_sg && card->options.performance_stats) { 5296 card->perf_stats.sg_skbs_rx++; 5297 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5298 } 5299 return skb; 5300 no_mem: 5301 if (net_ratelimit()) { 5302 QETH_CARD_TEXT(card, 2, "noskbmem"); 5303 } 5304 card->stats.rx_dropped++; 5305 return NULL; 5306 } 5307 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5308 5309 int qeth_poll(struct napi_struct *napi, int budget) 5310 { 5311 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5312 int work_done = 0; 5313 struct qeth_qdio_buffer *buffer; 5314 int done; 5315 int new_budget = budget; 5316 5317 if (card->options.performance_stats) { 5318 card->perf_stats.inbound_cnt++; 5319 card->perf_stats.inbound_start_time = qeth_get_micros(); 5320 } 5321 5322 while (1) { 5323 if (!card->rx.b_count) { 5324 card->rx.qdio_err = 0; 5325 card->rx.b_count = qdio_get_next_buffers( 5326 card->data.ccwdev, 0, &card->rx.b_index, 5327 &card->rx.qdio_err); 5328 if (card->rx.b_count <= 0) { 5329 card->rx.b_count = 0; 5330 break; 5331 } 5332 card->rx.b_element = 5333 &card->qdio.in_q->bufs[card->rx.b_index] 5334 .buffer->element[0]; 5335 card->rx.e_offset = 0; 5336 } 5337 5338 while (card->rx.b_count) { 5339 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5340 if (!(card->rx.qdio_err && 5341 qeth_check_qdio_errors(card, buffer->buffer, 5342 card->rx.qdio_err, "qinerr"))) 5343 work_done += 5344 card->discipline->process_rx_buffer( 5345 card, new_budget, &done); 5346 else 5347 done = 1; 5348 5349 if (done) { 5350 if (card->options.performance_stats) 5351 card->perf_stats.bufs_rec++; 5352 qeth_put_buffer_pool_entry(card, 5353 buffer->pool_entry); 5354 qeth_queue_input_buffer(card, card->rx.b_index); 5355 card->rx.b_count--; 5356 if (card->rx.b_count) { 5357 card->rx.b_index = 5358 (card->rx.b_index + 1) % 5359 QDIO_MAX_BUFFERS_PER_Q; 5360 card->rx.b_element = 5361 &card->qdio.in_q 5362 ->bufs[card->rx.b_index] 5363 .buffer->element[0]; 5364 card->rx.e_offset = 0; 5365 } 5366 } 5367 5368 if (work_done >= budget) 5369 goto out; 5370 else 5371 new_budget = budget - work_done; 5372 } 5373 } 5374 5375 napi_complete_done(napi, work_done); 5376 if (qdio_start_irq(card->data.ccwdev, 0)) 5377 napi_schedule(&card->napi); 5378 out: 5379 if (card->options.performance_stats) 5380 card->perf_stats.inbound_time += qeth_get_micros() - 5381 card->perf_stats.inbound_start_time; 5382 return work_done; 5383 } 5384 EXPORT_SYMBOL_GPL(qeth_poll); 5385 5386 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5387 { 5388 if (!cmd->hdr.return_code) 5389 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5390 return cmd->hdr.return_code; 5391 } 5392 5393 int qeth_setassparms_cb(struct qeth_card *card, 5394 struct qeth_reply *reply, unsigned long data) 5395 { 5396 struct qeth_ipa_cmd *cmd; 5397 5398 QETH_CARD_TEXT(card, 4, "defadpcb"); 5399 5400 cmd = (struct qeth_ipa_cmd *) data; 5401 if (cmd->hdr.return_code == 0) { 5402 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5403 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5404 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5405 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5406 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5407 } 5408 return 0; 5409 } 5410 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5411 5412 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5413 enum qeth_ipa_funcs ipa_func, 5414 __u16 cmd_code, __u16 len, 5415 enum qeth_prot_versions prot) 5416 { 5417 struct qeth_cmd_buffer *iob; 5418 struct qeth_ipa_cmd *cmd; 5419 5420 QETH_CARD_TEXT(card, 4, "getasscm"); 5421 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5422 5423 if (iob) { 5424 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5425 cmd->data.setassparms.hdr.assist_no = ipa_func; 5426 cmd->data.setassparms.hdr.length = 8 + len; 5427 cmd->data.setassparms.hdr.command_code = cmd_code; 5428 cmd->data.setassparms.hdr.return_code = 0; 5429 cmd->data.setassparms.hdr.seq_no = 0; 5430 } 5431 5432 return iob; 5433 } 5434 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5435 5436 int qeth_send_setassparms(struct qeth_card *card, 5437 struct qeth_cmd_buffer *iob, __u16 len, long data, 5438 int (*reply_cb)(struct qeth_card *, 5439 struct qeth_reply *, unsigned long), 5440 void *reply_param) 5441 { 5442 int rc; 5443 struct qeth_ipa_cmd *cmd; 5444 5445 QETH_CARD_TEXT(card, 4, "sendassp"); 5446 5447 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5448 if (len <= sizeof(__u32)) 5449 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5450 else /* (len > sizeof(__u32)) */ 5451 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5452 5453 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5454 return rc; 5455 } 5456 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5457 5458 int qeth_send_simple_setassparms(struct qeth_card *card, 5459 enum qeth_ipa_funcs ipa_func, 5460 __u16 cmd_code, long data) 5461 { 5462 int rc; 5463 int length = 0; 5464 struct qeth_cmd_buffer *iob; 5465 5466 QETH_CARD_TEXT(card, 4, "simassp4"); 5467 if (data) 5468 length = sizeof(__u32); 5469 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5470 length, QETH_PROT_IPV4); 5471 if (!iob) 5472 return -ENOMEM; 5473 rc = qeth_send_setassparms(card, iob, length, data, 5474 qeth_setassparms_cb, NULL); 5475 return rc; 5476 } 5477 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5478 5479 static void qeth_unregister_dbf_views(void) 5480 { 5481 int x; 5482 for (x = 0; x < QETH_DBF_INFOS; x++) { 5483 debug_unregister(qeth_dbf[x].id); 5484 qeth_dbf[x].id = NULL; 5485 } 5486 } 5487 5488 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5489 { 5490 char dbf_txt_buf[32]; 5491 va_list args; 5492 5493 if (!debug_level_enabled(id, level)) 5494 return; 5495 va_start(args, fmt); 5496 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5497 va_end(args); 5498 debug_text_event(id, level, dbf_txt_buf); 5499 } 5500 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5501 5502 static int qeth_register_dbf_views(void) 5503 { 5504 int ret; 5505 int x; 5506 5507 for (x = 0; x < QETH_DBF_INFOS; x++) { 5508 /* register the areas */ 5509 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5510 qeth_dbf[x].pages, 5511 qeth_dbf[x].areas, 5512 qeth_dbf[x].len); 5513 if (qeth_dbf[x].id == NULL) { 5514 qeth_unregister_dbf_views(); 5515 return -ENOMEM; 5516 } 5517 5518 /* register a view */ 5519 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5520 if (ret) { 5521 qeth_unregister_dbf_views(); 5522 return ret; 5523 } 5524 5525 /* set a passing level */ 5526 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5527 } 5528 5529 return 0; 5530 } 5531 5532 int qeth_core_load_discipline(struct qeth_card *card, 5533 enum qeth_discipline_id discipline) 5534 { 5535 int rc = 0; 5536 5537 mutex_lock(&qeth_mod_mutex); 5538 switch (discipline) { 5539 case QETH_DISCIPLINE_LAYER3: 5540 card->discipline = try_then_request_module( 5541 symbol_get(qeth_l3_discipline), "qeth_l3"); 5542 break; 5543 case QETH_DISCIPLINE_LAYER2: 5544 card->discipline = try_then_request_module( 5545 symbol_get(qeth_l2_discipline), "qeth_l2"); 5546 break; 5547 default: 5548 break; 5549 } 5550 5551 if (!card->discipline) { 5552 dev_err(&card->gdev->dev, "There is no kernel module to " 5553 "support discipline %d\n", discipline); 5554 rc = -EINVAL; 5555 } 5556 mutex_unlock(&qeth_mod_mutex); 5557 return rc; 5558 } 5559 5560 void qeth_core_free_discipline(struct qeth_card *card) 5561 { 5562 if (card->options.layer2) 5563 symbol_put(qeth_l2_discipline); 5564 else 5565 symbol_put(qeth_l3_discipline); 5566 card->discipline = NULL; 5567 } 5568 5569 const struct device_type qeth_generic_devtype = { 5570 .name = "qeth_generic", 5571 .groups = qeth_generic_attr_groups, 5572 }; 5573 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5574 5575 static const struct device_type qeth_osn_devtype = { 5576 .name = "qeth_osn", 5577 .groups = qeth_osn_attr_groups, 5578 }; 5579 5580 #define DBF_NAME_LEN 20 5581 5582 struct qeth_dbf_entry { 5583 char dbf_name[DBF_NAME_LEN]; 5584 debug_info_t *dbf_info; 5585 struct list_head dbf_list; 5586 }; 5587 5588 static LIST_HEAD(qeth_dbf_list); 5589 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5590 5591 static debug_info_t *qeth_get_dbf_entry(char *name) 5592 { 5593 struct qeth_dbf_entry *entry; 5594 debug_info_t *rc = NULL; 5595 5596 mutex_lock(&qeth_dbf_list_mutex); 5597 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5598 if (strcmp(entry->dbf_name, name) == 0) { 5599 rc = entry->dbf_info; 5600 break; 5601 } 5602 } 5603 mutex_unlock(&qeth_dbf_list_mutex); 5604 return rc; 5605 } 5606 5607 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5608 { 5609 struct qeth_dbf_entry *new_entry; 5610 5611 card->debug = debug_register(name, 2, 1, 8); 5612 if (!card->debug) { 5613 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5614 goto err; 5615 } 5616 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5617 goto err_dbg; 5618 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5619 if (!new_entry) 5620 goto err_dbg; 5621 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5622 new_entry->dbf_info = card->debug; 5623 mutex_lock(&qeth_dbf_list_mutex); 5624 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5625 mutex_unlock(&qeth_dbf_list_mutex); 5626 5627 return 0; 5628 5629 err_dbg: 5630 debug_unregister(card->debug); 5631 err: 5632 return -ENOMEM; 5633 } 5634 5635 static void qeth_clear_dbf_list(void) 5636 { 5637 struct qeth_dbf_entry *entry, *tmp; 5638 5639 mutex_lock(&qeth_dbf_list_mutex); 5640 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5641 list_del(&entry->dbf_list); 5642 debug_unregister(entry->dbf_info); 5643 kfree(entry); 5644 } 5645 mutex_unlock(&qeth_dbf_list_mutex); 5646 } 5647 5648 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5649 { 5650 struct qeth_card *card; 5651 struct device *dev; 5652 int rc; 5653 enum qeth_discipline_id enforced_disc; 5654 unsigned long flags; 5655 char dbf_name[DBF_NAME_LEN]; 5656 5657 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5658 5659 dev = &gdev->dev; 5660 if (!get_device(dev)) 5661 return -ENODEV; 5662 5663 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5664 5665 card = qeth_alloc_card(); 5666 if (!card) { 5667 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5668 rc = -ENOMEM; 5669 goto err_dev; 5670 } 5671 5672 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5673 dev_name(&gdev->dev)); 5674 card->debug = qeth_get_dbf_entry(dbf_name); 5675 if (!card->debug) { 5676 rc = qeth_add_dbf_entry(card, dbf_name); 5677 if (rc) 5678 goto err_card; 5679 } 5680 5681 card->read.ccwdev = gdev->cdev[0]; 5682 card->write.ccwdev = gdev->cdev[1]; 5683 card->data.ccwdev = gdev->cdev[2]; 5684 dev_set_drvdata(&gdev->dev, card); 5685 card->gdev = gdev; 5686 gdev->cdev[0]->handler = qeth_irq; 5687 gdev->cdev[1]->handler = qeth_irq; 5688 gdev->cdev[2]->handler = qeth_irq; 5689 5690 qeth_determine_card_type(card); 5691 rc = qeth_setup_card(card); 5692 if (rc) { 5693 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5694 goto err_card; 5695 } 5696 5697 qeth_determine_capabilities(card); 5698 enforced_disc = qeth_enforce_discipline(card); 5699 switch (enforced_disc) { 5700 case QETH_DISCIPLINE_UNDETERMINED: 5701 gdev->dev.type = &qeth_generic_devtype; 5702 break; 5703 default: 5704 card->info.layer_enforced = true; 5705 rc = qeth_core_load_discipline(card, enforced_disc); 5706 if (rc) 5707 goto err_card; 5708 5709 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5710 ? card->discipline->devtype 5711 : &qeth_osn_devtype; 5712 rc = card->discipline->setup(card->gdev); 5713 if (rc) 5714 goto err_disc; 5715 break; 5716 } 5717 5718 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5719 list_add_tail(&card->list, &qeth_core_card_list.list); 5720 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5721 return 0; 5722 5723 err_disc: 5724 qeth_core_free_discipline(card); 5725 err_card: 5726 qeth_core_free_card(card); 5727 err_dev: 5728 put_device(dev); 5729 return rc; 5730 } 5731 5732 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5733 { 5734 unsigned long flags; 5735 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5736 5737 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5738 5739 if (card->discipline) { 5740 card->discipline->remove(gdev); 5741 qeth_core_free_discipline(card); 5742 } 5743 5744 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5745 list_del(&card->list); 5746 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5747 qeth_core_free_card(card); 5748 dev_set_drvdata(&gdev->dev, NULL); 5749 put_device(&gdev->dev); 5750 return; 5751 } 5752 5753 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5754 { 5755 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5756 int rc = 0; 5757 enum qeth_discipline_id def_discipline; 5758 5759 if (!card->discipline) { 5760 if (card->info.type == QETH_CARD_TYPE_IQD) 5761 def_discipline = QETH_DISCIPLINE_LAYER3; 5762 else 5763 def_discipline = QETH_DISCIPLINE_LAYER2; 5764 rc = qeth_core_load_discipline(card, def_discipline); 5765 if (rc) 5766 goto err; 5767 rc = card->discipline->setup(card->gdev); 5768 if (rc) { 5769 qeth_core_free_discipline(card); 5770 goto err; 5771 } 5772 } 5773 rc = card->discipline->set_online(gdev); 5774 err: 5775 return rc; 5776 } 5777 5778 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5779 { 5780 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5781 return card->discipline->set_offline(gdev); 5782 } 5783 5784 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5785 { 5786 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5787 qeth_set_allowed_threads(card, 0, 1); 5788 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5789 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5790 qeth_qdio_clear_card(card, 0); 5791 qeth_clear_qdio_buffers(card); 5792 qdio_free(CARD_DDEV(card)); 5793 } 5794 5795 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5796 { 5797 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5798 if (card->discipline && card->discipline->freeze) 5799 return card->discipline->freeze(gdev); 5800 return 0; 5801 } 5802 5803 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5804 { 5805 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5806 if (card->discipline && card->discipline->thaw) 5807 return card->discipline->thaw(gdev); 5808 return 0; 5809 } 5810 5811 static int qeth_core_restore(struct ccwgroup_device *gdev) 5812 { 5813 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5814 if (card->discipline && card->discipline->restore) 5815 return card->discipline->restore(gdev); 5816 return 0; 5817 } 5818 5819 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5820 .driver = { 5821 .owner = THIS_MODULE, 5822 .name = "qeth", 5823 }, 5824 .ccw_driver = &qeth_ccw_driver, 5825 .setup = qeth_core_probe_device, 5826 .remove = qeth_core_remove_device, 5827 .set_online = qeth_core_set_online, 5828 .set_offline = qeth_core_set_offline, 5829 .shutdown = qeth_core_shutdown, 5830 .prepare = NULL, 5831 .complete = NULL, 5832 .freeze = qeth_core_freeze, 5833 .thaw = qeth_core_thaw, 5834 .restore = qeth_core_restore, 5835 }; 5836 5837 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5838 size_t count) 5839 { 5840 int err; 5841 5842 err = ccwgroup_create_dev(qeth_core_root_dev, 5843 &qeth_core_ccwgroup_driver, 3, buf); 5844 5845 return err ? err : count; 5846 } 5847 static DRIVER_ATTR_WO(group); 5848 5849 static struct attribute *qeth_drv_attrs[] = { 5850 &driver_attr_group.attr, 5851 NULL, 5852 }; 5853 static struct attribute_group qeth_drv_attr_group = { 5854 .attrs = qeth_drv_attrs, 5855 }; 5856 static const struct attribute_group *qeth_drv_attr_groups[] = { 5857 &qeth_drv_attr_group, 5858 NULL, 5859 }; 5860 5861 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5862 { 5863 struct qeth_card *card = dev->ml_priv; 5864 struct mii_ioctl_data *mii_data; 5865 int rc = 0; 5866 5867 if (!card) 5868 return -ENODEV; 5869 5870 if (!qeth_card_hw_is_reachable(card)) 5871 return -ENODEV; 5872 5873 if (card->info.type == QETH_CARD_TYPE_OSN) 5874 return -EPERM; 5875 5876 switch (cmd) { 5877 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5878 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5879 break; 5880 case SIOC_QETH_GET_CARD_TYPE: 5881 if ((card->info.type == QETH_CARD_TYPE_OSD || 5882 card->info.type == QETH_CARD_TYPE_OSM || 5883 card->info.type == QETH_CARD_TYPE_OSX) && 5884 !card->info.guestlan) 5885 return 1; 5886 else 5887 return 0; 5888 case SIOCGMIIPHY: 5889 mii_data = if_mii(rq); 5890 mii_data->phy_id = 0; 5891 break; 5892 case SIOCGMIIREG: 5893 mii_data = if_mii(rq); 5894 if (mii_data->phy_id != 0) 5895 rc = -EINVAL; 5896 else 5897 mii_data->val_out = qeth_mdio_read(dev, 5898 mii_data->phy_id, mii_data->reg_num); 5899 break; 5900 case SIOC_QETH_QUERY_OAT: 5901 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5902 break; 5903 default: 5904 if (card->discipline->do_ioctl) 5905 rc = card->discipline->do_ioctl(dev, rq, cmd); 5906 else 5907 rc = -EOPNOTSUPP; 5908 } 5909 if (rc) 5910 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5911 return rc; 5912 } 5913 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5914 5915 static struct { 5916 const char str[ETH_GSTRING_LEN]; 5917 } qeth_ethtool_stats_keys[] = { 5918 /* 0 */{"rx skbs"}, 5919 {"rx buffers"}, 5920 {"tx skbs"}, 5921 {"tx buffers"}, 5922 {"tx skbs no packing"}, 5923 {"tx buffers no packing"}, 5924 {"tx skbs packing"}, 5925 {"tx buffers packing"}, 5926 {"tx sg skbs"}, 5927 {"tx sg frags"}, 5928 /* 10 */{"rx sg skbs"}, 5929 {"rx sg frags"}, 5930 {"rx sg page allocs"}, 5931 {"tx large kbytes"}, 5932 {"tx large count"}, 5933 {"tx pk state ch n->p"}, 5934 {"tx pk state ch p->n"}, 5935 {"tx pk watermark low"}, 5936 {"tx pk watermark high"}, 5937 {"queue 0 buffer usage"}, 5938 /* 20 */{"queue 1 buffer usage"}, 5939 {"queue 2 buffer usage"}, 5940 {"queue 3 buffer usage"}, 5941 {"rx poll time"}, 5942 {"rx poll count"}, 5943 {"rx do_QDIO time"}, 5944 {"rx do_QDIO count"}, 5945 {"tx handler time"}, 5946 {"tx handler count"}, 5947 {"tx time"}, 5948 /* 30 */{"tx count"}, 5949 {"tx do_QDIO time"}, 5950 {"tx do_QDIO count"}, 5951 {"tx csum"}, 5952 {"tx lin"}, 5953 {"tx linfail"}, 5954 {"cq handler count"}, 5955 {"cq handler time"} 5956 }; 5957 5958 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5959 { 5960 switch (stringset) { 5961 case ETH_SS_STATS: 5962 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5963 default: 5964 return -EINVAL; 5965 } 5966 } 5967 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5968 5969 void qeth_core_get_ethtool_stats(struct net_device *dev, 5970 struct ethtool_stats *stats, u64 *data) 5971 { 5972 struct qeth_card *card = dev->ml_priv; 5973 data[0] = card->stats.rx_packets - 5974 card->perf_stats.initial_rx_packets; 5975 data[1] = card->perf_stats.bufs_rec; 5976 data[2] = card->stats.tx_packets - 5977 card->perf_stats.initial_tx_packets; 5978 data[3] = card->perf_stats.bufs_sent; 5979 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5980 - card->perf_stats.skbs_sent_pack; 5981 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5982 data[6] = card->perf_stats.skbs_sent_pack; 5983 data[7] = card->perf_stats.bufs_sent_pack; 5984 data[8] = card->perf_stats.sg_skbs_sent; 5985 data[9] = card->perf_stats.sg_frags_sent; 5986 data[10] = card->perf_stats.sg_skbs_rx; 5987 data[11] = card->perf_stats.sg_frags_rx; 5988 data[12] = card->perf_stats.sg_alloc_page_rx; 5989 data[13] = (card->perf_stats.large_send_bytes >> 10); 5990 data[14] = card->perf_stats.large_send_cnt; 5991 data[15] = card->perf_stats.sc_dp_p; 5992 data[16] = card->perf_stats.sc_p_dp; 5993 data[17] = QETH_LOW_WATERMARK_PACK; 5994 data[18] = QETH_HIGH_WATERMARK_PACK; 5995 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5996 data[20] = (card->qdio.no_out_queues > 1) ? 5997 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5998 data[21] = (card->qdio.no_out_queues > 2) ? 5999 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6000 data[22] = (card->qdio.no_out_queues > 3) ? 6001 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6002 data[23] = card->perf_stats.inbound_time; 6003 data[24] = card->perf_stats.inbound_cnt; 6004 data[25] = card->perf_stats.inbound_do_qdio_time; 6005 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6006 data[27] = card->perf_stats.outbound_handler_time; 6007 data[28] = card->perf_stats.outbound_handler_cnt; 6008 data[29] = card->perf_stats.outbound_time; 6009 data[30] = card->perf_stats.outbound_cnt; 6010 data[31] = card->perf_stats.outbound_do_qdio_time; 6011 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6012 data[33] = card->perf_stats.tx_csum; 6013 data[34] = card->perf_stats.tx_lin; 6014 data[35] = card->perf_stats.tx_linfail; 6015 data[36] = card->perf_stats.cq_cnt; 6016 data[37] = card->perf_stats.cq_time; 6017 } 6018 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6019 6020 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6021 { 6022 switch (stringset) { 6023 case ETH_SS_STATS: 6024 memcpy(data, &qeth_ethtool_stats_keys, 6025 sizeof(qeth_ethtool_stats_keys)); 6026 break; 6027 default: 6028 WARN_ON(1); 6029 break; 6030 } 6031 } 6032 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6033 6034 void qeth_core_get_drvinfo(struct net_device *dev, 6035 struct ethtool_drvinfo *info) 6036 { 6037 struct qeth_card *card = dev->ml_priv; 6038 6039 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6040 sizeof(info->driver)); 6041 strlcpy(info->version, "1.0", sizeof(info->version)); 6042 strlcpy(info->fw_version, card->info.mcl_level, 6043 sizeof(info->fw_version)); 6044 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6045 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6046 } 6047 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6048 6049 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6050 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6051 /* Always advertise and support all speeds up to specified, and only one */ 6052 /* specified port type. */ 6053 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6054 int maxspeed, int porttype) 6055 { 6056 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6057 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6058 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6059 6060 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6061 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6062 6063 switch (porttype) { 6064 case PORT_TP: 6065 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6066 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6067 break; 6068 case PORT_FIBRE: 6069 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6070 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6071 break; 6072 default: 6073 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6074 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6075 WARN_ON_ONCE(1); 6076 } 6077 6078 /* fallthrough from high to low, to select all legal speeds: */ 6079 switch (maxspeed) { 6080 case SPEED_10000: 6081 ethtool_link_ksettings_add_link_mode(cmd, supported, 6082 10000baseT_Full); 6083 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6084 10000baseT_Full); 6085 case SPEED_1000: 6086 ethtool_link_ksettings_add_link_mode(cmd, supported, 6087 1000baseT_Full); 6088 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6089 1000baseT_Full); 6090 ethtool_link_ksettings_add_link_mode(cmd, supported, 6091 1000baseT_Half); 6092 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6093 1000baseT_Half); 6094 case SPEED_100: 6095 ethtool_link_ksettings_add_link_mode(cmd, supported, 6096 100baseT_Full); 6097 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6098 100baseT_Full); 6099 ethtool_link_ksettings_add_link_mode(cmd, supported, 6100 100baseT_Half); 6101 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6102 100baseT_Half); 6103 case SPEED_10: 6104 ethtool_link_ksettings_add_link_mode(cmd, supported, 6105 10baseT_Full); 6106 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6107 10baseT_Full); 6108 ethtool_link_ksettings_add_link_mode(cmd, supported, 6109 10baseT_Half); 6110 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6111 10baseT_Half); 6112 /* end fallthrough */ 6113 break; 6114 default: 6115 ethtool_link_ksettings_add_link_mode(cmd, supported, 6116 10baseT_Full); 6117 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6118 10baseT_Full); 6119 ethtool_link_ksettings_add_link_mode(cmd, supported, 6120 10baseT_Half); 6121 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6122 10baseT_Half); 6123 WARN_ON_ONCE(1); 6124 } 6125 } 6126 6127 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6128 struct ethtool_link_ksettings *cmd) 6129 { 6130 struct qeth_card *card = netdev->ml_priv; 6131 enum qeth_link_types link_type; 6132 struct carrier_info carrier_info; 6133 int rc; 6134 6135 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6136 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6137 else 6138 link_type = card->info.link_type; 6139 6140 cmd->base.duplex = DUPLEX_FULL; 6141 cmd->base.autoneg = AUTONEG_ENABLE; 6142 cmd->base.phy_address = 0; 6143 cmd->base.mdio_support = 0; 6144 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6145 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6146 6147 switch (link_type) { 6148 case QETH_LINK_TYPE_FAST_ETH: 6149 case QETH_LINK_TYPE_LANE_ETH100: 6150 cmd->base.speed = SPEED_100; 6151 cmd->base.port = PORT_TP; 6152 break; 6153 case QETH_LINK_TYPE_GBIT_ETH: 6154 case QETH_LINK_TYPE_LANE_ETH1000: 6155 cmd->base.speed = SPEED_1000; 6156 cmd->base.port = PORT_FIBRE; 6157 break; 6158 case QETH_LINK_TYPE_10GBIT_ETH: 6159 cmd->base.speed = SPEED_10000; 6160 cmd->base.port = PORT_FIBRE; 6161 break; 6162 default: 6163 cmd->base.speed = SPEED_10; 6164 cmd->base.port = PORT_TP; 6165 } 6166 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6167 6168 /* Check if we can obtain more accurate information. */ 6169 /* If QUERY_CARD_INFO command is not supported or fails, */ 6170 /* just return the heuristics that was filled above. */ 6171 if (!qeth_card_hw_is_reachable(card)) 6172 return -ENODEV; 6173 rc = qeth_query_card_info(card, &carrier_info); 6174 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6175 return 0; 6176 if (rc) /* report error from the hardware operation */ 6177 return rc; 6178 /* on success, fill in the information got from the hardware */ 6179 6180 netdev_dbg(netdev, 6181 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6182 carrier_info.card_type, 6183 carrier_info.port_mode, 6184 carrier_info.port_speed); 6185 6186 /* Update attributes for which we've obtained more authoritative */ 6187 /* information, leave the rest the way they where filled above. */ 6188 switch (carrier_info.card_type) { 6189 case CARD_INFO_TYPE_1G_COPPER_A: 6190 case CARD_INFO_TYPE_1G_COPPER_B: 6191 cmd->base.port = PORT_TP; 6192 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6193 break; 6194 case CARD_INFO_TYPE_1G_FIBRE_A: 6195 case CARD_INFO_TYPE_1G_FIBRE_B: 6196 cmd->base.port = PORT_FIBRE; 6197 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6198 break; 6199 case CARD_INFO_TYPE_10G_FIBRE_A: 6200 case CARD_INFO_TYPE_10G_FIBRE_B: 6201 cmd->base.port = PORT_FIBRE; 6202 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6203 break; 6204 } 6205 6206 switch (carrier_info.port_mode) { 6207 case CARD_INFO_PORTM_FULLDUPLEX: 6208 cmd->base.duplex = DUPLEX_FULL; 6209 break; 6210 case CARD_INFO_PORTM_HALFDUPLEX: 6211 cmd->base.duplex = DUPLEX_HALF; 6212 break; 6213 } 6214 6215 switch (carrier_info.port_speed) { 6216 case CARD_INFO_PORTS_10M: 6217 cmd->base.speed = SPEED_10; 6218 break; 6219 case CARD_INFO_PORTS_100M: 6220 cmd->base.speed = SPEED_100; 6221 break; 6222 case CARD_INFO_PORTS_1G: 6223 cmd->base.speed = SPEED_1000; 6224 break; 6225 case CARD_INFO_PORTS_10G: 6226 cmd->base.speed = SPEED_10000; 6227 break; 6228 } 6229 6230 return 0; 6231 } 6232 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6233 6234 /* Callback to handle checksum offload command reply from OSA card. 6235 * Verify that required features have been enabled on the card. 6236 * Return error in hdr->return_code as this value is checked by caller. 6237 * 6238 * Always returns zero to indicate no further messages from the OSA card. 6239 */ 6240 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6241 struct qeth_reply *reply, 6242 unsigned long data) 6243 { 6244 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6245 struct qeth_checksum_cmd *chksum_cb = 6246 (struct qeth_checksum_cmd *)reply->param; 6247 6248 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6249 if (qeth_setassparms_inspect_rc(cmd)) 6250 return 0; 6251 6252 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6253 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6254 chksum_cb->supported = 6255 cmd->data.setassparms.data.chksum.supported; 6256 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6257 } 6258 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6259 chksum_cb->supported = 6260 cmd->data.setassparms.data.chksum.supported; 6261 chksum_cb->enabled = 6262 cmd->data.setassparms.data.chksum.enabled; 6263 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6264 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6265 } 6266 return 0; 6267 } 6268 6269 /* Send command to OSA card and check results. */ 6270 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6271 enum qeth_ipa_funcs ipa_func, 6272 __u16 cmd_code, long data, 6273 struct qeth_checksum_cmd *chksum_cb) 6274 { 6275 struct qeth_cmd_buffer *iob; 6276 int rc = -ENOMEM; 6277 6278 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6279 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6280 sizeof(__u32), QETH_PROT_IPV4); 6281 if (iob) 6282 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6283 qeth_ipa_checksum_run_cmd_cb, 6284 chksum_cb); 6285 return rc; 6286 } 6287 6288 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6289 { 6290 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6291 QETH_IPA_CHECKSUM_UDP | 6292 QETH_IPA_CHECKSUM_TCP; 6293 struct qeth_checksum_cmd chksum_cb; 6294 int rc; 6295 6296 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6297 &chksum_cb); 6298 if (!rc) { 6299 if ((required_features & chksum_cb.supported) != 6300 required_features) 6301 rc = -EIO; 6302 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6303 cstype == IPA_INBOUND_CHECKSUM) 6304 dev_warn(&card->gdev->dev, 6305 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6306 QETH_CARD_IFNAME(card)); 6307 } 6308 if (rc) { 6309 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6310 dev_warn(&card->gdev->dev, 6311 "Starting HW checksumming for %s failed, using SW checksumming\n", 6312 QETH_CARD_IFNAME(card)); 6313 return rc; 6314 } 6315 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6316 chksum_cb.supported, &chksum_cb); 6317 if (!rc) { 6318 if ((required_features & chksum_cb.enabled) != 6319 required_features) 6320 rc = -EIO; 6321 } 6322 if (rc) { 6323 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6324 dev_warn(&card->gdev->dev, 6325 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6326 QETH_CARD_IFNAME(card)); 6327 return rc; 6328 } 6329 6330 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6331 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6332 return 0; 6333 } 6334 6335 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6336 { 6337 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6338 : qeth_send_simple_setassparms(card, cstype, 6339 IPA_CMD_ASS_STOP, 0); 6340 return rc ? -EIO : 0; 6341 } 6342 6343 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6344 { 6345 int rc; 6346 6347 QETH_CARD_TEXT(card, 3, "sttso"); 6348 6349 if (on) { 6350 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6351 IPA_CMD_ASS_START, 0); 6352 if (rc) { 6353 dev_warn(&card->gdev->dev, 6354 "Starting outbound TCP segmentation offload for %s failed\n", 6355 QETH_CARD_IFNAME(card)); 6356 return -EIO; 6357 } 6358 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6359 } else { 6360 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6361 IPA_CMD_ASS_STOP, 0); 6362 } 6363 return rc; 6364 } 6365 6366 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO) 6367 6368 /** 6369 * qeth_recover_features() - Restore device features after recovery 6370 * @dev: the recovering net_device 6371 * 6372 * Caller must hold rtnl lock. 6373 */ 6374 void qeth_recover_features(struct net_device *dev) 6375 { 6376 netdev_features_t features = dev->features; 6377 struct qeth_card *card = dev->ml_priv; 6378 6379 /* force-off any feature that needs an IPA sequence. 6380 * netdev_update_features() will restart them. 6381 */ 6382 dev->features &= ~QETH_HW_FEATURES; 6383 netdev_update_features(dev); 6384 6385 if (features == dev->features) 6386 return; 6387 dev_warn(&card->gdev->dev, 6388 "Device recovery failed to restore all offload features\n"); 6389 } 6390 EXPORT_SYMBOL_GPL(qeth_recover_features); 6391 6392 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6393 { 6394 struct qeth_card *card = dev->ml_priv; 6395 netdev_features_t changed = dev->features ^ features; 6396 int rc = 0; 6397 6398 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6399 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6400 6401 if ((changed & NETIF_F_IP_CSUM)) { 6402 rc = qeth_set_ipa_csum(card, 6403 features & NETIF_F_IP_CSUM ? 1 : 0, 6404 IPA_OUTBOUND_CHECKSUM); 6405 if (rc) 6406 changed ^= NETIF_F_IP_CSUM; 6407 } 6408 if ((changed & NETIF_F_RXCSUM)) { 6409 rc = qeth_set_ipa_csum(card, 6410 features & NETIF_F_RXCSUM ? 1 : 0, 6411 IPA_INBOUND_CHECKSUM); 6412 if (rc) 6413 changed ^= NETIF_F_RXCSUM; 6414 } 6415 if ((changed & NETIF_F_TSO)) { 6416 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6417 if (rc) 6418 changed ^= NETIF_F_TSO; 6419 } 6420 6421 /* everything changed successfully? */ 6422 if ((dev->features ^ features) == changed) 6423 return 0; 6424 /* something went wrong. save changed features and return error */ 6425 dev->features ^= changed; 6426 return -EIO; 6427 } 6428 EXPORT_SYMBOL_GPL(qeth_set_features); 6429 6430 netdev_features_t qeth_fix_features(struct net_device *dev, 6431 netdev_features_t features) 6432 { 6433 struct qeth_card *card = dev->ml_priv; 6434 6435 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6436 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6437 features &= ~NETIF_F_IP_CSUM; 6438 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6439 features &= ~NETIF_F_RXCSUM; 6440 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6441 features &= ~NETIF_F_TSO; 6442 /* if the card isn't up, remove features that require hw changes */ 6443 if (card->state == CARD_STATE_DOWN || 6444 card->state == CARD_STATE_RECOVER) 6445 features &= ~QETH_HW_FEATURES; 6446 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6447 return features; 6448 } 6449 EXPORT_SYMBOL_GPL(qeth_fix_features); 6450 6451 netdev_features_t qeth_features_check(struct sk_buff *skb, 6452 struct net_device *dev, 6453 netdev_features_t features) 6454 { 6455 /* GSO segmentation builds skbs with 6456 * a (small) linear part for the headers, and 6457 * page frags for the data. 6458 * Compared to a linear skb, the header-only part consumes an 6459 * additional buffer element. This reduces buffer utilization, and 6460 * hurts throughput. So compress small segments into one element. 6461 */ 6462 if (netif_needs_gso(skb, features)) { 6463 /* match skb_segment(): */ 6464 unsigned int doffset = skb->data - skb_mac_header(skb); 6465 unsigned int hsize = skb_shinfo(skb)->gso_size; 6466 unsigned int hroom = skb_headroom(skb); 6467 6468 /* linearize only if resulting skb allocations are order-0: */ 6469 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6470 features &= ~NETIF_F_SG; 6471 } 6472 6473 return vlan_features_check(skb, features); 6474 } 6475 EXPORT_SYMBOL_GPL(qeth_features_check); 6476 6477 static int __init qeth_core_init(void) 6478 { 6479 int rc; 6480 6481 pr_info("loading core functions\n"); 6482 INIT_LIST_HEAD(&qeth_core_card_list.list); 6483 INIT_LIST_HEAD(&qeth_dbf_list); 6484 rwlock_init(&qeth_core_card_list.rwlock); 6485 mutex_init(&qeth_mod_mutex); 6486 6487 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6488 6489 rc = qeth_register_dbf_views(); 6490 if (rc) 6491 goto out_err; 6492 qeth_core_root_dev = root_device_register("qeth"); 6493 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6494 if (rc) 6495 goto register_err; 6496 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6497 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6498 if (!qeth_core_header_cache) { 6499 rc = -ENOMEM; 6500 goto slab_err; 6501 } 6502 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6503 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6504 if (!qeth_qdio_outbuf_cache) { 6505 rc = -ENOMEM; 6506 goto cqslab_err; 6507 } 6508 rc = ccw_driver_register(&qeth_ccw_driver); 6509 if (rc) 6510 goto ccw_err; 6511 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6512 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6513 if (rc) 6514 goto ccwgroup_err; 6515 6516 return 0; 6517 6518 ccwgroup_err: 6519 ccw_driver_unregister(&qeth_ccw_driver); 6520 ccw_err: 6521 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6522 cqslab_err: 6523 kmem_cache_destroy(qeth_core_header_cache); 6524 slab_err: 6525 root_device_unregister(qeth_core_root_dev); 6526 register_err: 6527 qeth_unregister_dbf_views(); 6528 out_err: 6529 pr_err("Initializing the qeth device driver failed\n"); 6530 return rc; 6531 } 6532 6533 static void __exit qeth_core_exit(void) 6534 { 6535 qeth_clear_dbf_list(); 6536 destroy_workqueue(qeth_wq); 6537 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6538 ccw_driver_unregister(&qeth_ccw_driver); 6539 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6540 kmem_cache_destroy(qeth_core_header_cache); 6541 root_device_unregister(qeth_core_root_dev); 6542 qeth_unregister_dbf_views(); 6543 pr_info("core functions removed\n"); 6544 } 6545 6546 module_init(qeth_core_init); 6547 module_exit(qeth_core_exit); 6548 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6549 MODULE_DESCRIPTION("qeth core functions"); 6550 MODULE_LICENSE("GPL"); 6551